What is a quick test to tell if a finish is varnish or poly? Thank you Tinker
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Since poly is varnish, that would be a tough test.
What is the point of the interest .......... Whats the need .....for someone that knows nada , refinishining both are equal
If it really matters, the usual oil based varnishes have a much lower softening point than polurethanes, so a deft test with a hair dryer or similar heat source will give you a clue. HTH
Joe
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I don't know of any similar chemical test for poly/resin varnish but they are considerably different visually, the poly having the well known "plasticy" look. Additionally, they abrade differently...scraping resin varnish will get you powdery shavings.
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If you rub the coating briskly with your hand, the varnish sometimes has a very different distictictive odor.
Good Luck.
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