We are having problems with adhesive bleeding through the veneer. We are using walnut veneer with epoxy in a hot press. We also bag with very little, to no bleeding through. We’ve tried urea, and we had bleed through as well. We’ve also thickened the epoxy. How do we stop this problem?
From Jeff Pitcher, forum technical advisor:
Epoxied veneer is really overkill. Urea resin should work fine provided you use it correctly. Apply the resin/catalyst mixture to the substrate (only) and allow it some open time of about 15 minutes. At this point, apply the veneer and put it in the bag or the press. The decrease in moisture will limit the bleed through. If this still doesn't do the trick, you could look at using a backed veneer, or you could size your veneers with Glue-Size before you glue.