Cheap CNC Router
by nic6911, published
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Yeah, the measurements should be correct, so I don't see why not. But remember that the holes for the plumbing pipe should not be cut through, only half way. And the wood needs to be 22mm.
Also I guess that the shop cannot drill the holes that needs to be drilled in the end of some of the parts. That is the holes required to assemble the machine. It's a bit hard to explain, but from the drawing and pictures you should be able to see what I mean...
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Plumbing pipe Â½" 21,3mm outside diameter:
42x 608ZZ bearings
12x 1Â½" U-bolts (see picture)
2 metres of 8mm threaded rod
6x M8 long nuts (coupling nut for assembling two rods)
32x M6x50mm bolts
32x M6 (10mm diameter, 20mm in length) furniture assembly nuts (see picture)
24x M8X16mm bolts
24x M8 Nuts
Aluminium angle 20x20mm 1.5mm thickness
Around 2m M5 threaded rod for mounting the steppers and the dremel
52x M5 nuts
16x M5 spacers
Rubber fuelhose with inner diameter of 5-6mm for holding the dremel and for steppercouplings.
22mm MDF - for all the parts
3 Nema 23 steppers
Any stepper driverboard ( i can recommend those from cnc4you.co.uk/ or gecko G540)
Power supply according to the driverboard and stepper specifications
And of course, a Dremel
more parts to come...
In this version i have used a cheap china stepper driver board from ebay. I can only say that you get what you pay for! It is possible to get it to work with the cheap boards, but you have to go really slow to avoid missing steps. They are not designed very good, and tweaks found on the net does not make them much better. I have used Gecko G540 with great succes, it is a superb board. But also a breakoutboard combined with the cheap stepper drivers from the link in the BOM does a great job like the Gecko.
Software used for running the machine:
CAM program used:
Unfortunately i only have a very poor video of the machine in action. I have sold it, so i can't make a new video. The video is played at played at 4 times original speed.
The thing is marked as work in progress as i will continue to fill out the BOM and also write some instructions if anyone is showing interest in this.
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