Problem milling MDF.

[jimcobalt]

I am a newbe with a tabletop CNC router table which uses a Rotozip.

When cutting MDF with a new 1/4 inch two flute carbide end mill, the edges of the material are left rough and frayed. Depth: 0.10, Feed: 60 ipm, RPM: 15m.

I am producing molds for casting urethane rubber which will be used to cast plastics.

Any suggestions on other inexpensive milling substrates would be appreciated.

Thanks, Jim

[Jarwalcot]

Jim,

This was posted awhile back.. See if it helps.

Good luck,

[jimcobalt]

JR

Many thanks for the speed rate guide. Based on this, my rpm is set too high. I will make the adjustment and run a test.

Regards, Jim