LumberJocks

Reply by Fred Hargis

  • Advertise with us

Posted on Polly over shellac

View Fred Hargis's profile

Fred Hargis

5838 posts in 3058 days


#1 posted 11-16-2018 11:37 AM

It’s what OSU55 said, the adhesion problem is why it’s often suggested to not use shellac under urethane finishes. But the problem isn’t actually the wax; it’s the urethane resins, which tend to inhibit adhesion. So using dewaxed shellac solves the problem, or using any finish that doesn’t have urethane resins. If you use an alkyd resin varnish (P&L 38, or SW Fast Dry Oil Varnish) it doesn’t matter what shellac, if any, you put under it. It should be said, there isn’t a guarantee you will have problems if you put urethane finishes on top of waxy shellac….just that you might have problems. But the risk isn’t worth it to me, so it’s the old ounce of prevention beats a pound of cure thing.

-- Our village hasn't lost it's idiot, he was elected to congress.


DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com