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Quick curing question

Nicholasdaniel

Junior Member
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131
When letting a nitro lacquer finish cure does it have to be in a ventilated room?
At my house i don't have a garage only a type of walk in closet on the outside of my house.
Would it be sufficient to let it cure in there?
 
Nitro cures by degassing - the solvents evaporate off the finish layer and end up somewhere else.  The better the air circulation the quicker and more reliable to process.  It will still cure in a small space, just slightly more slowly and more of the solvents will end up deposited on the surfaces of the space (the odor will linger.)

If it is all you have it will work.  I'd try to keep the window/door open whenever possible.  Ventilation is a good thing, paticularly with organic solvents. 
 
shanejw said:
Does temperature/humidity matter?

Yes, the lower the temperature the slower the process, the higher the humidity the slower the process. 

Nitro will usually cure well in any environment you would be comfortable sleeping in, a little warmer is ok, and drier is never a problem.  Good air circulation is what you really want. 
 
You wont get a circulation problem in your closet.  Vital are low humidity and warmish temps - dont stick it out in 50 degree weather. 

You'll have to test your materials and process.  Nitro dries differently depending on the type and brand and how thick you spray it.

THIN coats are better.  Not dust... but "just wet" and leave it.  Dont try to get it perfecto by adding more wet nitro.  Thats what reapplication is for.  If you test the finish on some scrap wood - when the nitro is sandable to dust, its pretty well cured.  I like to do reapplication about twice a day with no sanding, but if I'm going to sand between coats, then its a 3 or more day wait.  Nitro "shrinks" and you need to let it gas off a whole lot, or else what you sanded flat wont be flat when it continues shrinking.
 
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