CNCzone.com-The Largest Machinist Community on the net!



Home Page Mark Forums Read Today's Posts My Replies Classifieds Reviews Photo Gallery Web Links Share Files Advertise With Us Ad List
Go Back   CNCzone.com-The Largest Machinist Community on the net! > WoodWorking Machines > DIY-CNC Router Table Machines > Open Source CNC Machine Designs


Open Source CNC Machine Designs Discuss Open Source CNC Machine Designs here.


This forum is sponsored by:

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Ban this user!
Old 08-05-2008, 11:43 PM
johnohara's Avatar  
Join Date: Aug 2008
Location: www.johnohara.net
Posts: 178
johnohara is on a distinguished road
Epoxy/Granite Gantry Router

Hi Everyone.

The stars have finally aligned and I now have access to a waterjet cutter and a reliable supply of manufactured granite (quartz/resin) slabs.

I am well aware of the extensive (and very interesting) thread regarding manufactured quartz (herein called "Epoxy/Granite") and the great work done trying to formulate a suitable recipe for use in polymer casting. However, I do not intend to formulate my own recipe or borrow from that thread.

Instead, I will use commercially available slabs whose production process adheres to the Breton Process and is ISO 14001 certified.

All I have at this point are some "mocked-up" templates made of poster board (to scale) and some linear motion blocks and rails (expensive).

I meet with the waterjet guys tomorrow.
Reply With Quote

  #2   Ban this user!
Old 08-07-2008, 12:04 AM
johnohara's Avatar  
Join Date: Aug 2008
Location: www.johnohara.net
Posts: 178
johnohara is on a distinguished road
Meet The Waterjets

Dropped off my mock-ups and got 'schooled' on what I can expect the waterjet to do with my epoxy/granite. I didn't hear any concerns. As far as I can tell this part of the project is stable. Time is an issue tho'. These guys work hard to pay for the waterjet and the shop is busy. They were cutting a huge sheet of stainless when I brought in my stinky little posterboard pieces. My project felt insignificant by comparison but I picked up points by having pieces "to scale" and a CAD drawing with millimeter dimensions.

*sniff*

I'm using a remnant piece of e/g -- 24" x 30" x 20cm for this first build. The beige color is all wrong but I don't care. I need to learn as much as I can about working with and cutting this kind of material.

Slabs of commercial e/g generally come in two thicknesses -- 20cm and 30cm. The 30cm slabs are normally used for kitchen countertops and vanities and seem to be preferred by architects. A bull-nosed 30cm piece looks like real business. And is.

The 20cm slabs are nicer in my opinion but harder to come by. For our purposes here, 20cm is the way to go and plenty strong.

This will be a heavy, but *very stable* machine.

I've also done some checking and found a manufacturer of 10cm slabs. I'm tempted -- but sticking to my plan. I'll wait and use 10cm in a future build.
Reply With Quote

  #3   Ban this user!
Old 08-07-2008, 06:37 AM
 
Join Date: Jun 2007
Location: Netherlands
Posts: 55
Sieg is on a distinguished road

Sounds interesting. Can you show us the basic design of your machine? Id like to know what we are talking about here
Reply With Quote

  #4   Ban this user!
Old 08-07-2008, 11:51 PM
johnohara's Avatar  
Join Date: Aug 2008
Location: www.johnohara.net
Posts: 178
johnohara is on a distinguished road
Millimeters Not Centimeters

The thickness dimension is 20mm. Not 20cm as previously posted. I apologize for the mistake. From now on I will discuss everything in millimeters ("mm").

I purchased a 24" x 24" x 10mm piece today. I still prefer 20mm for the table base and gantry but 10mm might be better suited for the cross member that attaches to the leadscrew.

I will post pictures of the cut pieces when I get them back.
Reply With Quote

  #5   Ban this user!
Old 08-08-2008, 04:06 AM
greybeard's Avatar  
Join Date: Jun 2005
Location: UK
Age: 73
Posts: 1,368
greybeard is on a distinguished road

Hi johnohara.
Good luck with your build. I slightly envy you having a ready-made material to work with, and a local(?) waterjet facility to make it workable.
Are you planning to have everything bolt together, or are you using epoxy to bond it ?
Regards
John
__________________
It's like doing jigsaw puzzles in the dark.
Enjoy today's problems, for tomorrow's may be worse.
Reply With Quote

Sponsored Links
  #6   Ban this user!
Old 09-22-2008, 08:43 PM
 
Join Date: Jan 2008
Location: United States
Posts: 48
sigma relief is on a distinguished road

Who is manufacturing your off the shelf product? Based on the dimensions, it almost looks as if you are using composite counter top material. I'd love to know what your material is and more importantly what the specs on it are.

John
Reply With Quote

Reply

Tags
diy cnc, epoxy, gantry, granite, router




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Epoxy-Granite machine bases (was Polymer concrete frame?) walter Epoxy Granite 4640 05-17-2012 04:20 PM
Index to "Epoxy-Granite machine bases" thread walter Epoxy Granite 13 12-01-2011 10:45 PM
8020 Extrusions with Epoxy Granite filler? reiyuki 80/20, TSLOTS and other Aluminum Framing Systems 7 02-12-2010 02:10 AM
Epoxy-Granite CNC Lathe Design (and Build) romihs Vertical Mill, Lathe Project Log 7 03-29-2008 06:36 PM
Epoxy/granite machine concept Gizmot Vertical Mill, Lathe Project Log 12 02-28-2008 02:46 PM




All times are GMT -5. The time now is 05:12 AM.





Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2012, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO
Template-Modifications by TMS

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361