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Old 13th Sep 2020, 10:31 am   #42
MurphyNut
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Join Date: Apr 2016
Location: Croxley Green, Hertfordshire, UK.
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Default Re: What causes this in polyurathane varnish?

Quote:
Originally Posted by ajgriff View Post
A combination of applying coats too thickly and insufficient curing time between coats I suspect.

Alan
I would agree with this wholeheartedly, Sometimes it takes more than a day for the varnish to really set hard. Also it's important to mix the varnish really well between coats.
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