Wood Router, Snapping Cutters

[Tenson]

I note however, that the red paint rubs off which means it is rubbing on the wood. This part of the cutter should be slightly under-sized so only the blade comes in contact with the wood. Perhaps this causes the heating and breakage? Maybe I'll sand it off first and see how long it lasts.

[gorbo]

I note however, that the red paint rubs off which means it is rubbing on the wood. This part of the cutter should be slightly under-sized so only the blade comes in contact with the wood. Perhaps this causes the heating and breakage? Maybe I'll sand it off first and see how long it lasts.

I would lower the DOC to 2mm and try again, you can`t expect top notch cutting from a cheap bit

[Tenson]

You are probably right but the job will take longer so I'll just throw cutters at it when they cost almost £1 each.

[Tenson]

To be fair GWizard suggests a DOC @ 2mm with 4000mm/min and 20K RPM.