Re: [CAD_CAM_EDM_DRO] CNC Router Head/Motor???

Fusion X Studio wrote:

>I'm building my CNC router and am almost complete. The design is
>approximately 32"(x)28"(y)8"(z). I would like to be able to chuck a 1/4"
>end mill and be able to cut at depths of about 6~12 inches. I don't think a
>router will do because of the depths I want to cut. If cutting almost
>vertical cut the router would hit after a few inches. Preferably I would
>like to be able to have a 6" cutter but don't know what I could use. Any
>suggestions on a motor/head for my router?
>
>

This is probably impossible. Even HUGE Cincinnatti machines in the
50-100 TON class
can't make cuts like that because the cutter, itself, is too flexible.
What material are you
talking about? Wood only? there are some very small air-driven tools
that can get
down to the size of the cutter. Having a small tool down in the cavity
is a lot easier
than having a super-long tool extension. I think some of these air die
grinder tools
could handle a 1/2" carbide rotary file with a 1/4" shank, and make a
vertical wall.
I'm positive that it would fit with a 3/4" cutter, but I'm not sure how
well the air
motor would handle a tool that large. You also might be able to build a
long,
thin, spindle assembly that was less than 3/4" diameter, out of steel
tubing, with
ball bearings every couple of inches. You'd put a drive pulley on top,
and a collet
socket on the bottom. A quick thing to just get the feel of it would be
a Foredom
flexible shaft tool.

Jon