sharkcutup wrote:I second and totally agree with Adrian.
MDF does create a tremendous amount of dust/chips so be sure to have a good extraction/collection system.
Getting the feed/speed rates correct is crucial too because if it is too slow (burning/smoking) it not only smells bad but does not do the router bit much good either because it is getting to hot which can dull it by changing its temper strength due to that excessive heat. Too Fast causes chatter and rough edges.
rscrawford wrote:What kind of hold down do you have? Cutting full depth on 1" MDF creates a lot of pull upwards on your workpiece, and you could end up losing hold down if you rely on a vacuum spoilboard system.
Using a 3/8" compression bit seems to work the best with MDF. Single pass, and the chips packing in the kerf helps with vacuum hold down. I just cut 8 sheets of 3/4" and used 16000rpm and 600ipm single pass with a 3/8" compression.
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