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 Post subject: CNC dremel
PostPosted: Mon Mar 29, 2010 1:22 pm 
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Joined: Tue Feb 23, 2010 4:47 pm
Posts: 21
Location: Eastside Madison
My neighbor and I just finished Rev 0.1 of a Dremel CNC. Video: http://www.youtube.com/watch?v=TvKIFszppTI

It's designed to be just good enough to build better parts for itself. Theoretical resolution is 1/200 mm per step. The drives I am using have very little backlash (designed for microscopes)

I also scored a trunk load of hardwood scraps off craigslist, which will be milled by the machine to replace the hand drilled pine bits already on the machine.

Once the machine is done upgrading itself, we're going to build a CNC laser next, using the mill to make parts for it.

Any recommendations for bits to use for PCB etching? I have some small bits, but need to try them in copper.


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 Post subject: Re: CNC dremel
PostPosted: Mon Mar 29, 2010 4:59 pm 
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Joined: Mon Feb 22, 2010 8:44 pm
Posts: 12
Location: Madison Wi
My best experience was when i used v shaped engraving bits

Image.
The type is similar to this with a longer angle.

I also have some 1 and 2 mm end mills like these I can snail mail you if you like.
Image

It's a 3 mm shaft, but they should tighten in a 1/8th in dremel collet.


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