Also, just a guess, but I doubt coated endmills will make much difference.
If cheap metal cutting endmills give acceptable results, there's no reason not to use them. You'll find that even good quality spiral bits for wood will still gum up fairly quickly cutting plywood, especially at the lower feed speeds used on homebuilt machines.
__________________
Gerry
Mach3 2010 Screenset
http://home.comcast.net/~cncwoodworker/2010.html
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |