I got the curve backed buffalo horn bolsters done today on both the KITH blade, a mini skinner for myself and a flat backed set on a wapiti hunter for another guy. I forgot to take progress pics of the KITH bolsters getting done but the ones I did for the classic mini skinner are the same style, so this is the way I do it. First off I make sure the tang face of the piece of horn is flat using the disc sander to ensure it is. Then clamp the buff horn to the blade and mark the hole placement with the correct sized drill
Take the horn off the tang and complete the hole. Put the horn back on the tang using a undersize pin to locate it correctly then using the clamp mark the second hole.
After removing the horn and drilling the second hole I return it to the tang with two undersized pins and mark in the tang shape, the curve to the front and rear and cut that bolster to shape on the bandsaw.
I give it a perfunctionary sand and check it on the tang
It can then be clamped to the second side of horn and the process is repeated. Mark the first hole and drill it through, pin and clamp to mark the second hole and drill it through. At this stage I can pin both pieces together and using a 120grit belt and the platen I can refine the front of the bolster then the tricky part is to do the inside curve on the back of the bolster using the 2 inch wheel at the top of the platen, making sure to keep it square to the belt as I go or as close to square as my eye will hold.
So with all three done
I went ahead and epoxied and pinned them with black dyed epoxy and have them in the clamps vernight.