Sorry to hear about your setback.... but at least you are all better now!.... the first photo in post #12.... The rail that came in your kit... I wonder if that is someone else's extrude or if PPlasma machines it that way???... I would love to get my hands on (2)48" pieces of that.... Man, that would make my build go so much more smoothly, instead of trying to mount everything on the rails separately!... Is that aluminum machines so that the v-rail slips into the end?.... That is truly a piece of craftsman ship... I can see why they charge so much!.... How is that rack and pinion attached to the bottom of the rail like that, I'm guessing it is drilled through under that v-rail on top, then the v-rail slid into place... Hope you are all better now and wish you the best,
That pretty aluminum track is from Pacific Bearing.
It's an extrusion with a hard steel 'V' inserted into the extrusion.
What size is that gear rack 3/8 ?
Well the machine is alive and cutting.. I have been playing with some 14 material I had laying around.. I figure start with what I have and get the cut conditions perfect.. As of a couple days ago it was so so.. Now, I am getting a beautiful cut 100% Dross free but I have a 20 Deg bevel.. Now I am dam near sure this is because of Cut height, which I cant seem to get down.
Things I am doing.
I measured with a dial indicator my torch offset .037"
I put that into Sheet cam
I touch the torch off material and Zero Z
pierce height .190 I have lowered this to .140
Cut Height .130 I have lowered this to .070
Arc volts set 127
AND when it cuts it reads 127
All this and the torch according to mach is cutting 5/16" off the material
when I set arc volts at 90 the reading still fluctuate and go to roughly 127 and the z is moving up down based on the lights although happens so fast it is hard to see without wearing my weld helmet.
SO How can I get the tip closer and make this cut even better.. I mean I like the no dross but would really like to have something a little more square.
awesome!... You are almost there it seems!...
A little more updating.. the machine is up and cutting great, I have had a few issues to overcome.. and here is what I have found.
1) the large pulleys for the reduction were loose causing some sereuos disparity but was very intermitten. (took some time to catch it) I removed the pulleys and titened all the set screws also added Lock tite.
2) THC% rate in Mach was set to 30 This is what was causing my poor edge quality that is the serated look. I set it to 18% per Matt at Bull tear and now I have a beautiful edge. NO seration NO dross. The key to good cuts also is doing a series of cut condition lines to find out your arc volts needed for the DTHC for each material.
Last but not least the only other issue that has arose.
As of Sat I could not get a cut to finish without getting an error in mach
external Estop required.. Matt and I talked and he had me look at my Z axis switch.. this was good but what I found was I took my plasma cutter off of the lower shelf on the table and had set it on the ground. FOr ****s and giggles I hooked a set of jumper cables from the plasma cutter case to the leg of the table. Viola Machine cuts awsome again..
I am going to try and get a video of it cutting soon to post..
I only hope this can help someone else that may run into an issue.. and thanks to the poeple here who have already assembled and made this setup before using precision plasma and CandCnc controls
My Drawing,PDF and cut part.. MAchine is running Awsome...
Looks great man. Congrats on the build!
Need to make some axle brackets for a friend.. So I played with the file, cut speed, peirce height and cut height. Here is what I got...Profile 20 IPM, ID 15 IPM pierce height .180 cut height .085.. I played with hieght controls from .130 down to .060 this was the best so far. Also I used some of my anti splatter spray from the welder on each side of the material It helped alot the parts fell out of the nest and the Dross fell off the material when you tapped it. Machine thermal dynamics Cutmaster 51 60 PSI air.
Nice square edge