hey Chris,
you can get concealex from Blade-tech,they make it. I like it better than kydex. I've done sheaths for a couple of my khuks and it's not hard at all. if you have any questions I'm at woodworkswa@excite.com
by the way I'd recommend normark's sheaths but he doesn't do khukuris,if you don't want to make them yourself give me a buzz we'll work something out.
[This message has been edited by Brent VanZanen (edited 02-10-2001).]