Hi all, I'm designing an epoxy granite hobby CNC for fun. I thought some of you might be interested. I'll update the thread as I add new episodes. Enjoy.
Episode 1 and 2:
Episode 1 and 2:
Designing a Benchtop Epoxy Granite CNC
- Thread starter iusedtoberich
- Start date
Episode 3:
Episode 4:
Episode 5 here. This episode is all about attaching the column to the base.
Episode 6 here. This is a first attempt at physically experimenting with epoxy granite mixtures and molds.
Episode 7 here. This episode covers applying the proposed JB weld epoxy tramming system to a CNC Taig mill I already have.
Episode 8: I break apart the epoxy tramming to see what it looks like.
What spindle are you going to use?
I'm thinking about this one powered by a servomotor: https://www.ebay.com/itm/1843971095...d=link&campid=5335988529&toolid=20001&mkevt=1
Episode 2 shows a few spindle ideas.
Nice--it's an interesting project.
Here is episode 9. I filled my Taig mill frame with epoxy granite. Might be applicable to hollow frame based cue machines as well.
Episode 10. I started over and went in a completely different direction for the frame. Now it will be an aluminum extrusion, 6 x 6 x .5 inches filled with epoxy granite.
When I talked to a machine builder a few weeks ago, they move the rail to ensure it is fastened in a straight line and is also shimmed in the vertical axis as well. Said it was important for the steel rail to be secured to either a steel or cast frame. The second rail is then fastened to be parallel with the 1st straight rail. Machine building is always interesting. I see that the new Kern machines are built on their own form of concrete for stability and vibration dampening qualities.
Downside I thought was going to be the weight, but with some very clever work, have been able to produce a lighter more rigid more precise machine over a machine made from a cast iron frame/base. So you may be able to have a steel plate that contains both rails, with that plate being attached to the box section filled with the epoxy secret mix.
Downside I thought was going to be the weight, but with some very clever work, have been able to produce a lighter more rigid more precise machine over a machine made from a cast iron frame/base. So you may be able to have a steel plate that contains both rails, with that plate being attached to the box section filled with the epoxy secret mix.
Episode 11 here. I have the physical extrusion for the column and base in hand. I also briefly show the metal lathe I bought as a teen to do cue repairs.