I had MDF templates made on a CNC laser cutter, they cost $30 Australian each.
In my case, the templates were for measuring control deflections, so were one piece.
Particularly with the FX67 series airfoils, accuracy is critical.
Do not believe getting rid of waves will be all you need to do, despite some other posters.
Two local reprofiled a Mosquito and A mini Nimbus.
Mike Borgelt reprofiled the mini, and beat all the ASW20 to win an Oz nationals.