MIMF

Third classical, third "slipper foot" shim. I must be missing something. How proud do you leave the slipper foot prior the attatchment of the back kerfing? And, I just watched the Orberg video on fitting the classical guitar back. I probably should have watched the video before attatching the kerfing. I made a back radius gauge and ...then made a 1/8th" shim to fit the foot.

Sounds like the answer to the question is there. I don't know how much proud I leave mine, in terms of a number, but I have the arched radius stick there to see whether it's enough as I'm trimming things to height before putting in the back linings.

Gilbert,
It will depend on your back radius and the length of the slipper foot as it will get deeper the further it protrudes into the back. I just leave "ample" and then plane it down a bit when I start to "drive the bus" with the radius dish, and see what is needed to get things flush.
Mike

Sounds familiar. I think it's probably happened to everyone, especially if you're doing a stacked heel. If you plane the neck down to where it works well with the scarf joint, then the total stack will often be too thin if it's made from a standard blank. To make things work out better, I usually keep the neck shaft full thickness, and cut it down just at the top of the neck where the headstock scarfs in. When I do that, I have enough thickness left at the slipper foot so I don't have to add a shim between the foot and the back.

Yes, thank you, Brad. That is what I have been doing wrong. Each heel stack has been a 3/32nds-1/8th" too short at the tail end of the slipper foot.