Hi, I thought I would trhrow in my 2 cents worth in the hope it may
save someone years of grief!! I regularly engrave and drill my own
boards using a modified techno eisel machine. I ripped out the old
electronics and replaced the drivers with gecko micro steppers and
use the deskcnc serial board and software. The thing is amazing!!
however...... it was not always so. Over the last 8 years I tried on
many occasions to utilize various options presented at the time. The
biggest things I found was 1. it takes forever, 2. get the right
bits, 3. a dremel works fine (35,000 rpm is good enough). 4. make it
as smooth as possible (hence the geckos) 5. Use a "foot" so that the
bit cannot dig in and you can limit the depth.
I bought the dremel router foot and use that, it has an easy
adjustment and works great. The bits I get from north Bay Technical
(
http://www.northbaytechnical.com ) Very helpful and friendly.
Here is a link ytp a guy who has spent a lot of tome trying to build
his own with what looks like pretty good results. However I can tell
you he has acess to a Haas CNC and still it has taken him a fair
amount of time.....
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2541076838Hope some of it helps.
David