Had a crack at some moulds for carbon fibre rudders this weekend.  Finally getting a chance to use he machine for what I originally designed it to do.

Started out with two laminated sheets of 16mm MDF (32mm total)

Roughing pass with a 12.7mm straight flute router bit,

Then in with the 12mm ball mill.

Second half we just went straight in with the 12mm ball mill

We sanded and painted the mounds with epoxy and machined then again to the same profile the following day.

This finishing pass was 1.5mm step over with a 12mm ball mill at 45deg.

The moulds now require a hand sand and polish to bring them up to a good finish.  The section is a NACA63012A