No build a long, but just flatten both pieces with a scraper, sandpaper, sander/etc. Make sure its a tight fit. Clamp down oversized antler piece (should be wider than your limb tips). I use plastic weld on osage because its an epoxy same color as osage, but others use CA glue, some use regular clear epoxy, others use titebond 3 for wood/antler, you get the idea. Then use your file to shape in to desired shape.