Has anyone seen a small diameter "double compression" (upcut & downcut) spiral router bit? Sizes from 1/4" to 1"+ are easy to find, but I have not found anything smaller.
Like this, just in a 1/8" diameter:
http://www.toolstoday.com/p-5638-cnc...e-2-flute.aspx
I'm cutting lots of small shapes in baltic birch plywood and it's very fuzzy using an upcut only bit. So, my strategy has been to run the toolpath one time with a downcut bit, and then complete the cuts with an upcut bit. This works nicely, but requires pausing the program, changing tools, resetting Z zero, etc.
I'm also wondering if a bit this small can be used to take a full depth cut in a piece of 1/4" plywood? I generally cut in 3 passes of about .085", at speeds of 80-120 IPM. I would assume that I can make a deeper cut provided I slow down my feedrate accordingly. I'm not trying to improve my cut times, just avoid the tool change.
Thanks!
Steve