Joined: 21 May 2012 Posts: 7 Location: Brisbane, QLD
Are you planning on stripping the doors back to sound timber? If so, use whatever method works for you. Some prefer the old heat gun and scrapers, orbital sanders etc. If they're in good nick and just need a sand here and there and then a paint, I would recommend sealing the previous clears/varnish with shellac. Zinsser BIN, etc. This will isolate any mystery previous polyurethanes, clears, varnishes etc used and eliminate any possible interactions with your top coats.
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