We have always found epoxy bonding difficulties can be reduced to a few things.
1. Type of epoxy (we us conapp, recommended by Loveless the "Living Legend").
2. That its properly mixed.
3. Parts must be free from greaase and oil.
4. Parts must be allowed to fully cure.
5. No heat heat must be conducted throught the blade and handle when finishing. Steel (brass, etc...) pins and bolsters heat rapidly and can destroy an epoxy bond in a moment. We avoid heat by doing all machine work pre-assembly.
<a href="mailto:DaveBolton@Smithand...Knives.com</a>
Smith and Bolton Knives