Where to buy router bits

[paulus.v]

My spoilboard is actually my router table. I never cut through it. I am surfacing it only every few months with a depth of a few tenths of a millimeter. How have you got 300 m cut for the spoilboard surfacing? My table is 1400x1000 mm, with my 2" dia tool I take 50 mm width of cut which means 20 cuts of 1.4 m = 28 m.

As MDF is abrasive it is important to have the chipload as high as possible. It depends on the stiffness of your router, the tool dia & length, depth of cut and desired cut finish.
For example, let's say you are cutting with 24k rpm and 1000 mm/min feed and I do it at 8k rpm and 4000 mm/min with the same cutter. So for the chip thickness that I am cutting you make 12 cuts, your tool will wear 12 times faster.

You want to get out of the cut chips or shavings not dust.

Here is an example:





And here is rounding with an Arden "point cutting roundover" bit (for straight cutting I'm using the popular Chinese 6 mm dia single flute carbide bits):