Thread: Metric?

Further comments

You rarely need to buy bits that are metric or imperial when it comes to the cutting heads. As per comments above, the shaft matters, but as for the head it's almost meaningless.

No one will know or care if your roman ogee is metric! Straight cutters will not be the same after a single sharpen... Plus that 18mm ply you bought... Is not going to be 18mm. You must always measure your kerfs and test cut.

Invest in a Bridge City Kerfmaker. KM-1 Kerfmaker - Bridge City Tool Works these are witchcraft, voodoo, magic all rolled into one. They perform magic daily in my studio. It's like a good party trick for guests!

The only time accuracy in bit size is critical is for dovetail joints. These are always with imperial bits, for nobody does metric (except for the token 1 or 2 of them). I learned this the hard way after a long argument with Incra and Leigh Jigs. I was left well beaten after that run in!

One last comment, please don't buy cheap bits because the kit has 102 bits for $39.95... It's a world of pain. I've had some very small (and expensive) bits break on me while working on fine or almost finished work. The break gouges in and frigs it all up... Damaging your careful work leaving you cursing. What a major bummer that is. It's pain I'd prefer to avoid.

Question - how are you using the router as a thicknesser?