I found a local wood shop with a multicam cnc router that did the playfield for $150.00
I asked if I could write the g code but he he declined.... said metal workers didn't know how to cut wood.
So I sent him a dxf file with everything separated into different layers for all the different depths.
I'm used to holding very close tolerances for my day job(medical/aerospace parts) so I definitely went to tight.
I would go at least .005" per side oversized for the inserts (.010" total)
I used radius gauges(see pic) to to get the exact corner radii of all the inserts. The solid files I found online were quite a bit off.
I did pockets (see pic) for the inserts to sit on and went .245" down from the top. As it turns out wood sands much easier than the plastic did so next time I would go .255" down and sand the playfield down to the inserts. (plus because of the glue, the inserts dried much higher than .005" above wood)
I think just about every insert has a minimum corner radius of .125" so a .25 diameter cutter will work for most of the playfield.
The router at the shop I used had a tool changer on the router so he used several different cutters to do the playfield. all the through holes he did at .125" and then I re-drilled them by hand to size.
I believe he used a down cut endmill for most of the routing. (normal/up endmills make the top surface splinter)
I supplied a .062" cutter for some small slots , it was for hard steel so it made short work of the wood.
I supplied a 1/2" ball endmill for the shooter lane and programmed a 3-d surface path for that.
insert shelves (resized).pngradiusgauge (resized).jpg