There’s some discussion at: https://www.shapeoko.com/wiki/index.php/Materials#Plastics
A single-flute endmill is the usual recommendation: https://www.shapeoko.com/wiki/index.php/Endmills#Plastics
There’s some discussion at: https://www.shapeoko.com/wiki/index.php/Materials#Plastics
A single-flute endmill is the usual recommendation: https://www.shapeoko.com/wiki/index.php/Endmills#Plastics