anyone else cut arcylic? i cut mostly acrylic and would like to share preferences with other fabricators. here's my data:

bit: LMT Onsrud 63-775 Solid Carbide Upcut Spiral O Flute Cutting Tool, Inch, Uncoated (Bright) Finish, 21 Degree Helix, 1 Flute, 2.5000" Overall Length, 0.2500" Cutting Diameter, 0.2500" Shank Diameter
acrylic thickness: 1/8" - 1/2"
pass depth: 1/8"
feed rate: 20ipm
rpm: 20000
results: not a very clean cut, slight re-weld, not as smooth as i would like.

bit: LMT Onsrud 63-760 Solid Carbide Upcut Spiral O Flute, Inch, Uncoated (Bright) Finish, 21 Degree Helix, 1 Flute, 2.0000" Overall Length, 0.1250" Cutting Diameter, 0.1250" Shank Diameter
acrylic thickness: 1/8" - 1/4"
pass depth: 1/16"
feed rate: 20ipm
rpm: 20000
results: pretty clean, slight re-weld occasionally.


the re-welds aren't too bad and i can knock them off with my finger nail. i'd obviously not have any to begin with. my feed rate is way lower than what i've seen recommended online (100-200ipm). the problem is my work piece won't stay tacked down to my spoilboard if i use a higher ipm. if anyone has any advice/feedback for me, i'd appreciate it!