Plexi melted

which setting should be put because the plexi will not melt

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It’s not about how fast to go, lowest spindle speeds (depending on your machine) with a higher feed rate with a zero-flute end mill cutter

FYI: Try using Cass acrylic instead of plexi

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I’ve tried them all the same problem


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I work with Cass acrylics all the time and never have a melt down.

what feed rate are you using per inch?




I would run a fast feed rate, more like 4000mm/min and a thin pass depth about 0.5mm . And make sure its cast acrylic and not extruded acrylic.

I also noticed that your bits all say 2 flutes, however this setting has no effect on the toolpaths.