I have some lacquer thinner, about 17 litres of an 18 litre metal can, That has been sitting around (closed, in a storage shed), for about 3 years. I need to use it now and am wondering if it is still good to use as a thinner with 2 part catalyzing lacquer. It looks OK.
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Replies
If the can has been tightly sealed and is the appropriate thinner for the finish you are using, it shouldn't be any problem. It's just amixture of solvents. The worst thing that could happen is that some of the hotter components would have evaporated, but that doesn't happen much in a well sealed can.
Michael R
Edited 2/21/2005 2:00 pm ET by Woodwiz
I'd check with yer 2 part laquer supplier to find out if lacquer thinner is ok to use, even if new, but particularly if "old"
betcha the answer is "NO".
My supplier has lectured me several times about using "laquer thinner" as there are substantial questions about it's purity, and mixture of solvents in that tin/can.
They only suggest to me to use "ferbo reducer", and as yer only likley to be spraying a cuppla gallons of laquer, and yer likley only allowed to reduce or thin it to a max of typically 30%, you are likely risking a lot to try and use the laquer thinner when all you may need at most is a gallon of approved reducer.
I use laquer thinner for clean up of tools, and even then I get the lecture about impurities, cause apparently the mixture of solvents allowed to be in laquer thinners can cause yer spray gun packings, o-rings etc to swell and cause long-term equipment problems.
All it takes is a simple phone call to find out if it's OK, a call some folks wont make cause they think they are a certified alchemist, despite the fact they cannot find their certificate. .
Eric
in Calgary
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