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Shellac and humidity

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Forum topic by bbasiaga posted 07-23-2016 06:01 PM 303 views 0 times favorited 2 replies Add to Favorites Watch
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bbasiaga

754 posts in 1457 days


07-23-2016 06:01 PM

It’s a warm (90F) and 80% humidity day. Was planning to spray shellac on a project outdoors. I know this is a no no with laquer…should I hold off with shellac the?

-- Part of engineering is to know when to put your calculator down and pick up your tools.


2 replies so far

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Fred Hargis

3933 posts in 1955 days


#1 posted 07-23-2016 09:06 PM

The blush in lacquer in cause by the solvent evaporating (the finish dries) faster than the moisture can escape. Shellac can do the same thing. I’d hold off if at all possible. There are some way to slow the drying process down with shellac, none of which I’ve ever tried. Maybe someone else has the skinny on them.

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

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bbasiaga

754 posts in 1457 days


#2 posted 07-23-2016 09:58 PM

Thanks Fred. I was worried about just that. I went outside to figure out what I’d set up, and decided I didn’t want to deal with the heat anyway. It’s too gross out there for me, let alone the finish!

I set up a makeshift spray booth and vent system in the basement. Humidity controlled, if a bit dusty.

Brian

-- Part of engineering is to know when to put your calculator down and pick up your tools.

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