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Melted French Polish

Posted: Tue Aug 22, 2017 11:51 am
by rcnewcomb
While traveling by car the case was on the sunward side of the vehicle for about 3 hours.
When I pulled the instrument out this morning it was stuck to the fuzzy lining of the case on the bass side lower bout. I am confident I can fix this since I did the original French Polish. But is there anything else I can do to toughen up and or protect the finish to prevent this from happening again?

Re: Melted French Polish

Posted: Tue Aug 22, 2017 12:38 pm
by Diane Kauffmds
You've got me on this one. Shellac is a resin, so I can't think of any way to make it heat resistant, short of cross linking in a lab. But, there is a site that claims to have a formula that's more heat resistant.

http://www.ubeaut.com.au/hardshell.htm

I'm sorry, this happened to you.

Re: Melted French Polish

Posted: Tue Aug 22, 2017 4:07 pm
by johnnparchem
I have had good luck with Royal-Lac another crosslinking shellac. It can go on top of shellac. It makes it hard, and more water and alcohol resistant. I do not know about heat though.

Re: Melted French Polish

Posted: Wed Aug 23, 2017 6:33 am
by Danl8
rcnewcomb wrote:While traveling by car the case was on the sunward side of the vehicle for about 3 hours.
When I pulled the instrument out this morning it was stuck to the fuzzy lining of the case....
Like a canary in a coal mine, the shellac is tweeting that the storage conditions were not good. Thanks for this heads up; I will keep my cases out of the sun, esp. in the car.