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Varnish cure before covering
I varnished my balsa wood tips on the elevator and horiz stab yesterday. How long do I need to wait before covering them? The label on my varnish is worn off where the instructions are.
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Senior Member
Re: Varnish cure before covering
If it's Poly Fiber epoxy varnish, the manual says 7 days at 70 deg F to full chemical resistance. If it's warmer, you could probably do it a little earlier, but you do want them chemical resistant before you start wetting them with MEK-based Poly Stuff.
Also, there is a full reference at the back of your Poly Fiber manual that has all the instructions for every Poly Fiber product. Very handy.
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