Because these are too nice to discard just yet.
I fix all my Beatle boots at TechShop
Step 1: You Will Need:
Thick leather or hard fiberboard
Hammer or brad nailer
Small nails or tacks
Basic woodworking hand tools (chisel, rasp, knife)
Step 2: Prep the Bad Heel
Pull-out the nails holding in the eroded layers. The heels on this first pair are made from several layers of hide glued and nailed. I will be replacing them with more hide. There is also residual glue left behind which has to be sanded off. When doing a pair, sand both heels down to an equal height.
Step 3: Building an All-Leather Heel
If you have a last or a shoe form, then use that. Here I am using a piece of oak to secure the shoe. Use contact cement to glue the hide then the rubber layers and nail them down. It is important to keep the layers tight with no air between so I hit them a few times with a hammer first. The cement should be tacky when the layers are applied, so slipping should not be an issue. Make the bond permanent with tacks or brads. Once completely set, the excess leather and rubber can be trimmed with a knife and finished with sandpaper. If you have an electric belt or disc sander, then use that, being careful not to abraid the rest of the shoe.