Good feedback so far - thanks to all who've responded!

Yesterday I routed aluminum for the first time and added a couple of
pix to the web page (link in sig). As I was watching the 'Bot cut, it
ocurred to me that the small machine would actually do a better job on
this operation because of the smaller step size. Still, for a first
effort it came out fairly well.

Tech note: the cut was made with the spindle running at 4000 RPM with
x- and y-axis feed at 0.125"/sec and z-axis feed set at 0.01"/sec -
the bit was a 3-flute 1/8" solid carbide up-spiral.

Non-tech note: I broke three bits before I got the feed/speed
combination right. :-(

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/JBot.html