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 Post subject: Melted French Polish
PostPosted: Tue Aug 22, 2017 11:51 am 
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Joined: Wed Jul 29, 2015 9:04 pm
Posts: 193
Location: San Jose, CA, USA
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?


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 Post subject: Re: Melted French Polish
PostPosted: Tue Aug 22, 2017 12:38 pm 
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Joined: Sun Mar 09, 2014 8:13 pm
Posts: 1319
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.


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 Post subject: Re: Melted French Polish
PostPosted: Tue Aug 22, 2017 4:07 pm 
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Joined: Sat Apr 10, 2010 10:50 pm
Posts: 2281
Location: Seattle
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.

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 Post subject: Re: Melted French Polish
PostPosted: Wed Aug 23, 2017 6:33 am 
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Joined: Mon Jul 28, 2014 7:50 am
Posts: 425
Location: Chadds Ford, PA
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.


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