Quote Originally Posted by erniehatt View Post
Thanks for the feedback.
I only go by what the program I use tells me, I use Carbide create, and it just gives a figure that I use, I don't profess to be an expert
The Acrylic I use is stuff I get from eBay, so it could be anything.
Everything is in MM' So what figures am I really using.
Ok, that seems quite slow if mm/min, but it does depend on the tool your using. ie: # of flutes, length, HSS or Carbide, coated or uncoated, etc.
I don't cut acrylic very often but the last time I did it was with 1.5mm dia tool single flute carbide cutter in cast acrylic and I'm pretty sure I was cutting much faster than that.!

For a 3mm single flute cutter even if HSS steel, I'd be looking towards double that feed for a starting point and with double the RPM.!