Ranger, Not to disagree with Tim, I love his work and have one of his leather horns, but what about 5 min. epoxy? Tint it with some sort of black powder (ground charcoal?) and then wrap the tip with some wet rawhide or heavy twine. You have a perfect groove for wrapping the tip to hold it together. You can clean up the inside of the tip with a rat tail file. If you need a plug, a violin tuning peg works great. If you're in southern Wi. , I'd be glad to help.