MDF bit?

[ljdm]

Drilling mdf - 1/4" 2 flute carbide end mill. Does it matter coated, or uncoated? Looking for best bit life, avoid burning, etc......
Running PC router, best feed and RPM?

[beacon14]

The best results when drilling come from using a bit that is slightly smaller in diameter than the hole and using a spiral plunge with a cleanup pass. Much better for the bit and the router bearings.