Cut off the inboard part of RFC1 as shown in fig. 10 using hot wire saw, so blocks not bonded yet.
Made aileron cut RFC3 with a hacksaw blade cut off pointy.
Made the first bonding joint on RFC1, as a bit of a trial.
Setup the hot wire 0.6" above the bench and attempted the perimeter cut of the root section of RFC1. Made a bit of a hash of it, will rig a vertical wire for the next one. Broke my saw wire, fixed it roughly to finish and replaced it after.
Made up a series of jig templates, ie. recreating what the inside of the jig is supposed to be, and putting that on plywood to check what I have.