Index to "Epoxy-Granite machine bases" thread

[ckelloug]

Materials

water filtration sand Link to Post 84 Blank Mcgyver
Us Composites EPOX-1505563 the #635 epoxy everyone is talking about Link to Post 267 Blank WilliamD
Cabosil from Cabot Link to Post 537 Blank lgalla
alumina material Link to Post 9999 Blank jsage
Zeospheres Link to Post 551 Blank walter
quartz Link to Post 593 Blank walter
pool filter sand Link to Post 596 Blank brunog
East System Epoxy 9482 Link to Post 1161 Blank brunog
Dupont Starblast Ultra sand blasting material with decent size distribution Link to Post 1226 Blank ckelloug
Aluminum honeycomb Link to Post 1299 Blank groger
Granitek Precision Granite Castings http://www.granitek.co.uk/materials.html Link to Post 1421 Blank walter
Reichhold 37-127 / 37-606 optimal epoxy from reichhold product line according to apps engineer Same as US Composites EPOX-1505563 Link to Post 1657 Blank ckelloug

Suppliers

Accures 3 cu ft casting kit 360$ 435 pounds Link to Post 10 References Post 5 Episs
www.sika.com epoxy grout Link to Post 12 Blank Episs
www.shopmaninc.com a.k.a. www.uscomposites.com Link to Post 44 Blank lgalla
http://www.reade.com/products/sand/granite-aggregates http://www.kafkagranite.com/ Link to Post 52 Blank lgalla
The Cary Company www.carycompany.com Link to Post 551 Blank walter
www.u-s-silica.com quartz Link to Post 593 Blank walter
http://www.r-g.de/ R&G epoxy in Germay Link to Post 949 Blank sposl
http://www.agsco.com U.S. custom aggregate supplier Link to Post 1230 Blank ckelloug
http://www.michaelengineering.com/ Vendor of epoxy dispensing equipment Link to Post 1376 Blank ckelloug
http://www.decomp.com/ Supplier of Composite Materials Stuff like carbon cloth, tools and mold releases. Link to Post 1436 Blank speed33317
Post with 4 links to vacuum pump suppliers Link to Post 1553 Blank Eson

Techniques

degassing with a blowtorch Link to Post 163 Blank lgalla
vacuum degassing with paint pot foaming overflow and big vacuum pumps. Link to Post 167 Blank lgalla
Poly vinyl alcohol with water soluable tendancies as a mold release, paste rather than sprayed Link to Post 212 Blank lgalla
Chopped Kevlar makes the viscosity go up very quicly therefore not suitable. Link to Post 497 Blank lgalla
Kevlar absorbs moisture in raw form and deterioates under UV exposure Link to Post 503 Blank lgalla
Epoxy spraying is dangerous without body suit and air supplied respirator Link to Post 527 Blank lgalla
Carbon Black will make a black cloud when you open it and a little goes a long way. Link to Post 558 Blank lgalla
IN-Situ Vacuum compaction of the mixture (This post is worth reviewing). Link to Post 794 References Post 791 StepperMonkey
R794 DOesn't this need perforated release film and bleeder material? Link to Post 795 Blank lgalla
Watch out for amine blush and sand off before repouring on that part Link to Post 855 Blank lgalla
Rules of thumb for deflection Link to Post 1159 Blank ckelloug
Fuller's Rule for particle size distribution (Suboptimal by about 8%) Link to Post 1198 Blank brunog
De-gas with a vacuum pump using a paint pot as the vacuum chamber Link to Post 1359 Blank lgalla
Make sure to let the epoxy cure fully. This can take either days or high temperatures Link to Post 1445 Blank lgalla
Secondary bonding aka bonding to a layer of epoxy long after it has set is a problem Link to Post 1466 Blank lgalla
Comments on mold Release and mold draft. Link to Post 1760 Blank lgalla
Comments describing the de Larrard optimal formula for aggregate mixture design. Link to Post 1824 Blank ckelloug

Observations

epoxy granite Link to Post 4 References Post 1 lgalla
Expensive damping properties 10 times cast iron Link to Post 6 References Post 5 lgalla
Polyester shrinkage and brittleness make it unsuitable Link to Post 8 Blank lgalla
Establish Terminology E/G to avoid confusion with polyester Link to Post 9 Blank lgalla
Fill rate between 80% and 85% aggregate, aggregate bears weight, mix of aggregate sizes Link to Post 11 Blank RotarySMP
Forklift accident problem is a concern Link to Post 26 Blank lgalla
Zanite up to 6 mm aggregate size Link to Post 20 Blank dansutula
E/G strength may be too low to replace steel in machines Link to Post 21 Blank Mcgyver
accrues casting claims .0005 tolerance on parts and better damping Link to Post 22 Blank Geof
Metalworking vs. woodworking rigid metal frame with e/g damping Link to Post 36 Blank Mcgyver
epoxy steel fiber anyone? Link to Post 45 Blank the4thseal
A mix of aggregate sizes is needed Link to Post 46. Blank RotarySMP
skepticism about the larger aggregates. Link to Post 47 References Post 46 lgalla
8% epoxy, all grades of aggregate, vibratory table, vacuum degassing Link to Post 49 Blank RotarySMP
spherical packing ratio mixtures and difficult 3 part system Link to Post 51 Blank greybeard
spherical packing 1: .2 :x ratio for tetrahedral packing Link to Post 61 Blank greaybeard
aggregates are generally a local product Link to Post 62 Blank lgalla
is making a commerical mill out of E/G composite Link to Post 63 Blank nMotion
12% epoxy had epoxy pooling in german machine Link to Post 66 References Post 30 RotarySMP
Steel structure filled with E/G will likely be easier DIY. Fewer problems pertaining to voids. No steel frame requires special attention to aggregate ratios. Link to Post 72 Blank Geof
aggregate ratio 10 mm :5mm : 3mm Link to Post 78 Blank Chris-Jennings
need thin epoxy 600cps, reactive dilutents smell bad. Makre sure it ships non-hazmat Link to Post 82 Blank lgalla
3/8 to sand aggregate, low viscosity slow cure epoxy, accurate steel or aluminum molds for accurate parts. (Post is worth referring back to.) Link to Post 85 References Post 63 nMotion
milled glass fiber to keep epoxy aggregate ratio down and lower viscosity Link to Post 89 Blank lgalla
Problems have to jig all inserts and bolt holes to be cast into the epoxy Link to Post 92 References Post 90 lgalla
aggregate from .1 to 16 mm. resin 7%-10%; 70Hz 2.5g shaker. make parts same size as cast iron but solied instead of cored (post is worth referring back to). Link to Post 94 Blank RotarySMP
Anything will work if you are just trying to damp conventional machines. Link to Post 95 Blank Geof
list of E/G properties that is useful (Post is worth referring back to) Link to Post 96 Blank RotarySMP
Doesn't believe that E/G is practical for DIY machine frames. Link to Post 97 Blank Geof
The german site shows that something quite workable can be done well with improvised equipment Link to Post 102 References Post 30 RotarySMP
Bury an 80/20 frame in E/G leaving the top exposed. Link to Post 103 Blank digits
E/G and aluminum match well thermal expansion wise and good for embedment of 80/20 etc. Link to Post 113 Blank Geof
Solid frames must be aligned accurately as they will not deflect to cover imperfections. Link to Post 125 Blank lgalla
steel tubing is expensive and also has to be normalized which is also expensive Link to Post 145 Blank walter
E/G may need reinforcement with steel and will need inserts for bolts etc. Link to Post 188 Blank brunog
post-tensioning Link to Post 230 Blank the4thseal
post tensioing may cause the vibration damping properties to be decreased. Link to Post 231 References Post 230 Geof
points out bottom is in compression, top is in tension. Link to Post 240 Blank skippy
entrapped air expands when the epoxy goes exothermic Link to Post 244 Blank lgalla
Moglice ways and rails repair compund is expensive and bad value. Link to Post 257 Blank JerryFlyGuy
aggregate size and mixing is the critical point fill density is better when the ratio is right Link to Post 349 References Post 347 brunog
Calculation for the 1/5 by volume ratios for E/G aggregate. Link to Post 369 Blank brunog
theoretical packing density for quaternary structure is 1:7:38:316 for 95% Link to Post 380 Blank martinw
Area moment of inertia of square beam Link to Post 383 Blank zumba
What is stiffer 4" of E/G or 1/2" of cast iron? Link to Post 387 Blank lgalla
Use a truss to make a 16 foot unsupported beam Link to Post 407 Blank ger21
Hollow core slabs Link to Post 408 Blank martinw
West System Epoxy publishes magazine epoxyworks so beware of bias Link to Post 416 Blank ger21
Hollow E/G beam thin steel on the outside E/G filled but empty center around neutral axis (Worther referencing) Link to Post 418 Blank Zumba
Crystallize approach to rebar Link to Post 420 Blank jsage
Analysis of beams by lever arm method Link to Post 425 Blank martinw
Use of foam filled tubes to minimize deflection. Link to Post 443 Blank lgalla
Foam filled beam Helps in preventing slenderness ratio column collapse. Link to Post 444 Blank martinw
Single part foam is useless at filling voids unifoemly in closed parts. Link to Post 444 Blank martinw
Create foam core E/G Link to Post 447 Blank brunog
Foamed epoxy filled aluminum Link to Post 453 Blank brunog
Foamed epoxy outrageously expensive. Link to Post 456 Blank lgalla
Mold a vacuum grid into the table. Link to Post 467 Blank Zumba
IF overall engineering is good perfection of the fabrication becomes less critical Link to Post 472 Blank jsage
Use of Glass Microspheres. Link to Post 473 Blank greybeard
Kevlar shortage and dupont. Link to Post 489 Blank brunog
Chopped kevlar strands Link to Post 492 Blank jsage
use of chopped glass fiber or other fiber to resist microcracks Link to Post 497 Blank lgalla
questions using E/G on beams based on imagesetter design Link to Post 499 Blank mhasting2004
509 description of Anocast process for imagesetter Link to Post 2004 Blank mhasting
add graphite Link to Post 514 Blank ger21
add CarbonBlack, Not graphite. (Actually they can be quite similar according to cabot CK) Link to Post 515 References Post 514 Geof
Sportiness reference Link to Post 521 Blank walter
Thixotropic epoxy and Cabosil Link to Post 537 Blank lgalla
comment about nobody doing anything Link to Post 552 Blank BobWarfield
filling in castings on an R45 Mill. Link to Post 561 Blank davo727
note problems with 90 degree angle cuts. Want v Grooves to avoid stress concentration. Link to Post 567 Blank jsage
commercial countertop 95% granite 5% epoxy Link to Post 583 Blank walter
fillet right angles at 3/4 inch radius Link to Post 585 Blank brunog
clept Epoxy Quartz E/Q Link to Post 588 Blank lgalla
Announces his experimentation start with E/Q Link to Post 592 Blank sposl
Epoxy might vaporize at low vacuum and hose pump Link to Post 599 Blank martinw
describes results filling machine base and parts with epoxy. Link to Post 606 Blank davo727
problems with air bubbles with small sand. West105 resin and 206 hardener had low exotherm. Link to Post 606 Blank davo727
quartz lamps to heat the epoxy for cure Link to Post 610 Blank jsage
Vibration at the correct frequency will cause the material (which is thiotropic) to liquify Link to Post 614 Blank lgalla
Cast self leveling epoxy tiles as load bearing portion. Fill center with E/G and cast final surface Link to Post 619 Blank greybear
Moldmaking for inserts anchors plates and replicaton Link to Post 621 References Post 619 brunog
Playsand plus epoxy? Link to Post 627 Blank Zumba
1 part epoxy one part playsand and 3 parts rock work better than just sand. Link to Post 629 Blank davo727
Epoxy natural sand tests pictures. Link to Post 631 Blank Zumba
concern on high freq vibration Link to Post 633 Blank jsage
Calorific absorption in epoxy causing it to draw into spaces. Link to Post 641 Blank jsage
sledge hammering paper cup cast samples. Link to Post 648 Blank Zumba
higher frequencies are less likely to disrupt the aggregate mix. Better Air bubble release. Link to Post 653 Blank Geof
We've probably reached the end of the possibilites Link to Post 663 References Post 660 jsage
Non-Polymer Concrete/Mild Steel probably the way to go. (Concrete designer) Link to Post 664 Blank ahlbebuck
Concrete takes a long time to cear and be stable along with iron castings. E/G if done well is fastlgalla 678 Thermal expansion issues with concrete. Link to Post 667 Blank Zumba
Structureal Civil engineer speaking about aggregate sizes 6mm 13mm 19mm 25mm 32mm sand 250 micron to 3mm Link to Post 688 Blank ahlbebuck
post-tensioing of frame. Link to Post 688 Blank ahlbebuck
Bigger aggregate is natually desnse. Must use graded aggregate to fill gaps. Link to Post 692 Blank ahlbebuck
quartz is good: fines from 6mm to about 25 - 32 mm. Link to Post 695 Blank ahlbebuck
Hermle Machine makes mills with E/G bases .00003 precision if properly cared for Link to Post 717 Blank MikeMattera
an excellent post describing making a mixture which is likely to be the right stuff.(Worth referring to again) Link to Post 719 Blank sposl
Many remarks about vibrating concrete Link to Post 729 Blank pupa
Approximately 30% of his samples appears to be air. Link to Post 732 Blank sposl
using a press for compaction Link to Post 733 Blank walter
Muchh less than 29 inches of vacuum is not enough to deair the mixture. Link to Post 739. Blank wjfiles
Applying impulses may be the best means of agitating. Link to Post 741 Blank StepperMonkey
Epoxy with viscosities as low as water Link to Post 759 Blank StepperMonkey
Vibration apparently has to be in the up and down direction. Link to Post 767 References Post 30 brunog
Sacrifice strength for practicality. Use more liquid mix and more reinforcements. Link to Post 777 Blank walter
Talk to manufacturer app engineers as they know more about this stuff than we ever will. Link to Post 779 Blank pupa
Reference to the rebar cage idea Link to Post 785 References Post 404 walter
Use thermally safe bag material. Link to Post 796 References Post 794 LeeWay
Thinking about practical solutions with bucket mixing degassing, pouring and the lack of thermal probs. Link to Post 812 Blank Zumba
Epxoy Surface Plates Link to Post 822 Blank walter
Ultra low viscosity epoxies for resin injection using vacuum bagging/vacuum infusion. Link to Post 847 Blank gt3073b
pictures of some plates with carbon black Link to Post 853 Blank walter
formula used that was working was 60% large quartz/ 25% zeospheres/15% fine quartz Link to Post 859 Blank walter
picture of fabulous surface plate type. Link to Post 861 Blank walter
Pictures of polymer concrete samples. Link to Post 879 Blank speed33317
pictures of E/G samples 12% epoxy .18mm 15.85% .49mm 26.06% 1.52mm 46.09% Link to Post 889 Blank sposl
Forklift Theory is out. Sample is gummy. Link to Post 907 Blank walter
incredible results with zeospheres and 3 micron quartz Link to Post 919 Blank walter
need to get external lab involvement. Link to Post 920 Blank lgalla
Deflection is far more important than Ultimate Strength in E/G because if we are ever near ultimate load it's bad. E/G mixes for this designed to deflect none at all . Link to Post 937 Blank martinw
Importance of understanding load on parts to be made. Bottom is in tension, top in compressions Link to Post 944 Blank ckelloug
Heat parts for cure with IR lamps. Link to Post 945 Blank LeeWay
McMaster Carr pneumatic rotary ball vibrator Link to Post 818 Blank Zumba
Qualitative Results Link to Post 33317 Blank Speed
Epoxy Suface plate good to .003 in 16x14 ft! Link to Post 833 Blank lgalla
Perhaps reinforcement not used in order to keep parts from warping due to differential thermal expansion Link to Post 956 Blank sposl
An excellent calculation of strength (Should be referred to again) Link to Post 976 Blank fyffe555
An excellent explanation of shear. Link to Post 979 Blank fyffe555
compressive and tensile moduli are substantially different and flexural is also different Link to Post 981 Blank ckelloug
E/G effect on torsion in small cross section member isn't very high Link to Post 986 Blank fyffe555
Strengthen the mixture by the effects of dispersion hardening using Carbon Black Link to Post 997 Blank ckelloug
Silica Fume for dispersion hardening Link to Post 1000 Blank ckelloug
.1 micron limit of small paricles Tensile strength limits unreinforced beam Link to Post 1019 Blank ckelloug
$175 for a test of modulus or compressive strength Link to Post 1031 Blank ckelloug
Shop Press and a pressure guage easiest way to apply known force. Link to Post 1035 Blank yugami
Walter is testing with improvised screw press and torque wrench Link to Post 1107 Blank walter
Pictures of Walter's testing setup Link to Post 1165 Blank walter
Technical Report from National Institute for Statistical Studies Virtual packing density of round sand is 71 percent http://www.niss.org/technicalreports/tr104.pdf Link to Post 1185 Blank greybeard
Commerical concrete sample mixture picture (think Kitchenaid Mixer) Link to Post 1195 Blank ckelloug
Bamberg and Slocum concrete filled steel tube machines Link to Post 1200 Blank uhrgerat
Comparisons between Reichhold polymer countertop agregate distribution and Fuller's formula aggregate distribution Link to Post 1210 Blank brunog
Check of ckelloug calculation of moment for multiple materials. Also points out unreliability of ckelloug method for getting quantitative numbers from Walter's test Jig Link to Post 1216 Blank fyffe555
Spinning the mold. Link to Post 1248 Blank greybeard
Vacuum levels reccomended by a vacuum deiaring equipment company. (Highly disputed on this thread) Link to Post 1249 Blank ckelloug
Comments on Huntsman Epoxy and Proceedings of the First International Congress on Polymer Concretes 5th to 7th of May, 1975. Published in 1976 by the Construction Press Limited in London. Link to Post 1256 Blank ckelloug
CNCZ-1 Formula using Reichhold aggergate design Dow Z6040 coupling agent, BYK A525 deairing agent, Cabot Monarch 120 carbon black Link to Post 1280 Blank ckelloug
Large quantities of Carbon black affect the epoxy cure either slowing of impeding it. Link to Post 1309 Blank walter
What is the effect of Shore Hardness of the Cured epoxy on strength Link to Post 1316 Blank brunog
Vacuum deairing is common in industry for epoxy Link to Post 1330 Blank harryn
an excellent description of Fuller's Formula (Fullers formula has been shown by De Larrard to be Suboptimal by 8%) Link to Post 1334 Blank brunog
Use of a surplus refrigerator compressor to get partial vacuum Link to Post 1335 Blank brunog
Hydrocal B11 Plaster of Paris for filling parts Link to Post 1337 Blank Servo_Wizard
pictures of Akvacnc's E/G sample from France Link to Post 1370 Blank walter
Suggestion of Using static mixers to mix and dispense the epoxy to avoid gas entrapment from mixing the epoxy itself Link to Post 1374 Blank fyffe555
Correlation between SHore Hardness and Epoxy strength is sketchy Link to Post 1384 Blank ckelloug
Comments on polymer concrete used to make signs. (Not E/G) Link to Post 1387 Blank Joe_Crumley
Squaring a mchine with bolted parts and Epoxy grout. Epoxy without a thixotrope will just flow out of the joints. Link to Post 1394 Blank lgalla
Test results from SAnd and epoxy tested on an arbor press 4:1 sand to epoxy. Worse results as epoxy fraction goes up. Link to Post 1426 Blank Zumba
Strength and rigidity come from the aggregate. Critique of Zumba's recipe as too much epoxy. Link to Post 1427 References Post 1426 RotarySMP
Excellent discussion of vacuum bagging and strength of epoxy fiberglass. Also important comments about home shoppers building weak gantry supports. Link to Post 1435 Blank PlasticWorker
Comments about alcohol causing stress crazing of stressed acrylic. O/T but interesting. Link to Post 1449 References Post 1447 greybeard
Links to some pictures from the German rapidforum about E/G machines. Link to Post 1461 Blank Eson
Use of a decomissioned oxygen cyllinder as a vacuum chamber Link to Post 1469 Blank ckelloug
Use of E/G doesn't necessarily get you away from difficult machining as ways etc. are still difficult. Embed 80/20 extrusions. Link to Post 1475 Blank Geof
Random Collection of info gleaned from a day at Slamon Library at UAH. Aggreagte properties and choices, carbon black, titanates, silyoxanes , mica, wollasanite . . . (worth referring back to) Link to Post 1485 Blank ckelloug
Importance of Fracture toughness rather than hardness as an aggregate selection criteria Link to Post 1491 Blank ckelloug
Use of surfactants to improve epoxy wetting. Link to Post 1504 Blank rancherbill
Use a concrete mixer. If a metal one, you can heat it with a tigertorch. Link to Post 1510 Blank Geof
Surface Energy and Surfactants Link to Post 1520 Blank ckelloug
Spin casting of parts using a lathe. Link to Post 1549 Blank greybeard
Thinning epoxy Link to Post 1571 Blank fyffe555
Reactive Dilutants Link to Post 1574 Blank fyffe555
Epoxy Toughening Agents ABS and PMMA Link to Post 1593 Blank walter
Walter's sample reaches over 1ksi tensile in a flexural strength test! Link to Post 1598 References Post 1597 ckelloug
Introduction to De Larrard's theory of aggreate mixture design Link to Post 1624 Blank ckelloug
10% strength improvement with using Isopropyl alcohol to dry the aggreate mixture Link to Post 1635 Blank walter
Warnings about deairing agents and Novec Fluorosurfactant as being things where only a tiny bit is good. Link to Post 1687 Blank ckelloug
Pictures of spincasting experiments on the lathe Link to Post 1698 Blank greybeard
Pictures of zeospheres and their flow characteristics. Link to Post 1719 Blank walter
Samples with 5-15 mm quartz are weaker. Link to Post 1723 Blank walter
Greybeard's particle sperator for home sieving of aggregate. Link to Post 1742 Blank greybeard
A nice summary of the general principles Link to Post 1748 Blank ckelloug

Purpose

90% of the people here don't build metal working cnc's or metal parts. Link to Post 28 References Post 21 walter
build a solid 1ft to 12 ft CNC frame table or gantry with leveled precision surface for linear rails. No metal saw milling machine welding or drill pressing. Link to Post 141 Blank walter
E/G is brilliantly simple to use- can be done in your garage, requires no tools can be used by virtually anyone. Try that with mild steel anocast or granite. Link to Post 334 Blank walter
Heavy E/G Gantry Link to Post 450 Blank walter
Picture of router we'd like to be able to build Link to Post 942 Blank walter
References on what he wants to build Link to Post 963 Blank lgalla
CNC mini Mill 300mm by 500mm x 500mm Link to Post 965 Blank sposl
36 inch bridge mill and dampening of steel structures. Link to Post 966 Blank leeway
E/G based CNC table Link to Post 967 Blank BobWarfield
E/Q gantry mill with 12 inch Z axis Link to Post 16x32 Blank brunog
lb gantry 4ft long 50 lb Z axis most interest here. Link to Post 100 Blank lgalla
My current project is 36" x 36" fixed gantry hybrid (E/Q with aluminum guts). The beam will probably be in the 4"x6" area, carrying 50lbs max. Link to Post 1088 Blank walter
Purpose statement gleaned form all the conversations Link to Post 1129 Blank ckelloug
BYK Apps engineer says BYK C-8000 does not work in Epoxy! Link to Post 1780 Blank ckelloug
Walter's E/G samples substantially stronger than natural granite countertop Link to Post 1786 Blank walter
All of the aggregate has broken in Walter's sample including the #6 AlO2 Link to Post 1809 Blank walter
Comments about using BYK A525 deairing agent in the mixture Link to Post 1822 Blank walter
Pictures of Harbor Freight Concrete Vibrators used for vibrating the mold. Link to Post 1834 Blank walter
Drilling a cast E/G piece is probably a bad idea as is the use of expanding concrete anchors. Link to Post 1854 Blank Geof
Use of steall wool and Graphite as a mechanism for embedding threaded parts and making wear surfaces Link to Post 1871 Blank Bob_B

Q&A

Anyone built anything form polymer Concrete. Link to Post 1 Blank walter
Dewayne Harelow cnncbridges.com Link to Post 1 References Post 1 walter
Hardinge and precision optical equipment but no diy Link to Post 2 References Post 1 Mcgyver
What is the effect of aggregate size on strength, what aggregates for other applications, techniques for dealing with mixtures of aggregates. Link to Post 70 Blank Mcgyver
Do we know how much more E/G than granite is needed to make a 12 foot router have comparable deflection in bith materials? Do we know the cost differential if we don't know the materials required? Link to Post 159 Blank Mcgyver
What aggregates, aquarium sand, glass beads, glass fiber? Molding: vibration? Antifoamin additives? Link to Post 220 Blank brunog
why are some of the calculations by weight and others by volume? Link to Post 360 Blank lgalla
4x4x1/4 tube with and without e/g which will be stiffer of will added weight cause more deflection? Link to Post 403 Blank lgalla
description of deflections in beams at 4 feet. Link to Post 406 References Post 399 Zumba
How do different modulus materials in a beam's construction effect it? Link to Post 434 Blank lgalla
Example of composite boat building. Link to Post 442 References Post 434 jsage
What degree of precision does everybody need. Link to Post 578 Blank jsage
1/16 inch Link to Post 578 References Post 578 jsage
light duty vs. heavy duty light duty is 1/16th. E/G unnecessary at 1/16. Reproducibility and vibration damping. Link to Post 580 References Post 578 lgalla
Liquids and solids aren't compressible so why the press? Link to Post 761 Blank Zumba
What's better a low ratio pice full of bubbles or a high ratio pice that's deaired. Link to Post 787 Blank lgalla
Why is a cast iron tabletop 1 inch thick while the same part in E/G is 4 inches thick. Link to Post 948 Blank lgalla
will hoolow E/G improve the deflection issues Link to Post 948 Blank lgalla
What is the largest member to be considered in the machines being built? Link to Post 954 Blank ckelloug
4ft usupported 20 ft supported. Link to Post 955 References Post 954 walter
What ratio of carbon black and does it affect viscosity? Link to Post 999 Blank brunog
Cabot sends Carbon Black, should stiffen the material Link to Post 1010 References Post 999 ckelloug
Has anyone considered using Garnet? Link to Post 1016 Blank jkeyser
dispersion hardening with nanoparticles Link to Post 1051 Blank ckelloug
What is the right stuff in epoxy? Link to Post 1052 Blank walter
Critical length for fiber reinforcement Link to Post 1072 Blank ckelloug
Rule of mixtures determines strength by ratio of parts in composite materials Link to Post 1082 Blank ckelloug
DAK (Materials chemist) reccomends ignoring silating agents (worth referring back to) Also mentions the purposes of microreinforcement. Link to Post 1156 Blank DAK3333

References

http://www.cnczone.com/modules.php?n...threadid=24879 cncbridges thread Link to Post 1 Blank walter
http://www.itwpolymercastings.com/ E/G machine parts Link to Post 5 References Post 1 Episs
http://www.accurescasting.com/index.html E/G machine parts Link to Post 5 References Post 1 Episs
www.moglice.com moldable bearing holder Link to Post 8 Blank lgalla
http://www.accurescasting.com/polymer.html on properaties of accres material Link to Post 22 Blank Geof
Zanite www.itwpolymercastings.com/faqzanite Link to Post 25 Blank Geof
http://www.machinedesign.com/ASP/vie...te&catId=0 link to machine design magazine on all polymer machines Link to Post 23/37 Blank turmite
http://5128.rapidforum.com/topic=110...p;search=beton German CNC machine site Link to Post 30 Blank schrupphobel72
http://www.mech.utah.edu/~bamberg/re...e%20Design.pdf Bamberg's theis on principles of rapid machine desing with concrete damping of metal machines Link to Post 73 Blank BobWarfield
http://video.google.com/videosearch?q=datron datron router with E/G frame Link to Post 74 Blank Xerxes
http://books.google.co.uk/books?id=h...esult&cd=1 Link to Post 79 References Post 78 Chris-Jennings
http://www.epucret.de/files/EPU_News_NR_26.pdf epucret is a french copany that makes e/g machines Link to Post 134 Blank Aramon
http://www.moldmakingtechnology.com/...es/040401.html moldmaking technology magazine hard milling Link to Post 157 Blank walter
http://www.epucret.de/maschinenbau_anwendungen.html more epucret stuff. Link to Post 158 Blank Aramon
http://www.joewoodworker.com/ making a venturi vacuum system Link to Post 0 Blank ger21
a whole bunch of machine frame pictures attached to article for reference Link to Post 174 Blank walter
http://www.microplan-group.com/pagin.../celith_gb.htm celith french epoxy granite company Link to Post 198 Blank brunog
http://www.cnczone.com/forums/attach...p;d=1170207942 lgalla's table design Link to Post 203 Blank JerryFlyGuy
http://www.diamond-drill-bit-and-too...Drill/MAIN.htm diamond drills for granite Link to Post 215 References Post 212 vger
summary to post 240 www.precisionepoxy.com - Awesome Epoxy Surface Plate! - DIY Instructions Link to Post 241 Blank walter
http://www.ktm-reiseenduro.de/tz/mg2.htm http://5128.rapidforum.com/topic=110...p;search=beton german machine designs in german Link to Post 242 Blank brunog
http://diamant.ph/en/produkte/dwh/ an E/G manufacturer link Link to Post 254 Blank JerryFlyGuy
http://www.nist.gov/ nistir 6361 The NIST fire science report on polymer concrete optimizationmartinw 351 http://www.adhesivestoolkit.com/Docs...%20Testing.xtp explanation of epoxy creep Link to Post 258/259 Blank brunog
summary posting. (Good to refer to again) Link to Post 364 Blank walter
http://www.blackwell-synergy.com/doi...1961.tb13716.x (Good to refer to again) Link to Post 380 Blank martinw
Drawing of potential way of doing hollow core rebar tube (Worth referring to agin). Link to Post 436 Blank jsage
http://www.sae.org/technical/papers/960435 sae paper on column collapse Link to Post 444 Blank martinw
http://www.rockwellautomation.com/an...o/anocast.html Anocast imagesetter info Link to Post 0 Blank mhasting2004
http://www.rockwellautomation.com/an...df/Anocast.pdf Further anocast information Link to Post 525 Blank jsage
http://www.velocityseriesinsider.com...11%20November/ http://www.velocityseriesinsider.com...12%20December/ http://www.4spe.org/pub/journals/index.php http://www.vitroco.com/discovery/polymer.pdf http://www.skk-banjaluckapivara.com/...composite.html Link to Post 536 Blank jsage
http://www.vitroco.com/discovery/polymer.pdf aluminosilicate Link to Post 548 Blank jsage
http://www.cnczone.com/forums/attach...p;d=1174281201 micosphere selction guide Link to Post 551 Blank walter
http://www.cnczone.com/forums/showthread.php?t=33434 WilliamD's thread on his tests Link to Post 553 Blank walter
machine design in post http://www.thewarfields.com/cnccookbook/CCEGGantry.html Link to Post 560 Blank BobWarfield
Google FU-TUNG CHENG lifestyle countertops for interesting materials Link to Post 587 Blank martinw
pictures prepping mill for filling base with E/G Link to Post 589 Blank davo727
http://www.colouredaggregates.com/ Link to Post 600 Blank brunog
Brenton (Breton?) Stone and how they make it. AkA manufactured quartz countertops 4.5 inch slab is vibrocompacted down to 3/4 inch Link to Post 632 Blank walter
Terastone Technology 2000 to 4800 Hz vibration between 720 and 680 mm of vacuum Link to Post 634 Blank walter
http://www.chockfastgrout.com/indextwo.html Link to Post 640 Blank RogerH
Pictures of German machine without E/G in it yet. Link to Post 649 Blank walter
http://www.freepatentsonline.com/20060283136.html Breton Stone Patent info Link to Post 658 Blank walter
http://www.surfacefabrication.com/Si...ant%20Tour.htm Bretonstone fabrication (Worth referencing again) Link to Post 660 Blank walter
pictures of carbon black Link to Post 705 Blank walter
http://www.cnczone.com/forums/attach...p;d=1175483284 research paper on polymer concrete properties Link to Post 0 Blank lgalla
http://www.cnczone.com/forums/attach...p;d=1175565278 aggregate size calculator Link to Post 726 Blank brunog
http://www.sullair.com/corp/details/...TI5905,00.html concrete vibrator labelled for 18,0000 hz (however careful reading of the datasheet shows its 18000VPM!!!!!!) Link to Post 0 Blank pupa
E/G aggregate contents and silane treatment papers http://jrp.sagepub.com/cgi/content/abstract/1/4/370 http://jrp.sagepub.com/cgi/reprint/1/4/370 Link to Post 737 Blank pupa
Quote form Cincinata Milicron about 95% quartz and 6x damping ratio. Link to Post 775 Blank pupa
http://www.precisionepoxy.com/NPS%20plate.htm Naval postgraduate school epoxy surface plate Link to Post 839 Blank walter
Pictures of 400-700 micron quartz, 200 micron zerospheres, 3 micron fine quartz, carbonblack Link to Post 846 Blank walter
http://www.cnczone.com/forums/attach...p;d=1176348307 Vibratory table for glass recycling Link to Post 891 Blank lgalla
http://www.canadacool.com/COOLFACTS/...ftCarrier.html An aircraft carrier made from ice and wood pulp designed during the second world war. Link to Post 930 Blank ger21
Paper by walker showing larger aggregate does not improve concrete strength Link to Post 934 Blank lgalla
http://www.fire.nist.gov/bfrlpubs/build99/art032.html nist lab report on optimizing E/G E/Q but does not address aggregate sizing. Link to Post 935 Blank brunog
http://www.mech.utah.edu/~bamberg/people/bamberg.html Link to Principles of Rapid Machine design PHD thesis by Bamberg Link to Post 974 Blank BobWarfield
http://www.michaelengineering.com/index.htm Epoxy metering equipment Link to Post 1010 Blank ckelloug
http://www.nanoresins.com Also bilbiography of texts and materials used. Link to Post 1051 Blank ckelloug
Hardener data sheet for epotuf 37-606 Us composites 635 hardener Link to Post 1053 References Post 1052 ckelloug
http://www.cnczone.com/forums/attach...p;d=1177647171 Beamer java applet for deflections Link to Post 1060 Blank ckelloug
http://www.cnczone.com/forums/attach...p;d=1177701256 datasheet for epotuf 37-127 the epoxy used in us composites 635 Link to Post 1064 Blank ckelloug
http://www.cnczone.com/forums/attach...p;d=1178124508 DOWz6040 coupling agent data sheet Link to Post 1129 Blank ckelloug
http://www.cnczone.com/forums/attach...0&d=1178543309 Reichhold aggreagte forumlation for polyester concrete countertop Link to Post 1201 Blank ckelloug
http://www.crosslinktech.com/degassing_materials.htm Crosslink Technologis FAQ on degassing epoxy Link to Post 1368 Blank ckelloug
Links to 3 Epoxy Manufacturer FAQ's about vacuum Degassing Link to Post 1373 Blank ckelloug
American Mineralogical Society on Fracture Toughness of various forms of Quartz http://www.minsocam.org/ammin/AM67/AM67_1065.pdf also coorstech alumina http://www.coorstek.com/products/grindingmedia.asp Link to Post 1386 Blank ckelloug
Paper on a national lab laser scanning and building computer models of aggregate. http://ciks.cbt.nist.gov/~garbocz/paper144/index.html Link to Post 1471 Blank ckelloug
Paper found by Walter which is the Paper by de Larrard who wrote the expensive book on concrete mixture proportioning. (Worth a read) Link to Post 1547 Blank ckelloug
Datasheet for Reichold Glycidyl Ether Reactive Dilutent http://www.cnczone.com/forums/attach...2&d=1181880265 Link to Post 1557 Blank ckelloug
References to de Larrard's aggreagte simulation software at the french burau of roads and bridges Link to Post 1669 Blank ckelloug

[DerekMessina]

Nice Post! cool thread! keep it up. I enjoy the info you present here