Lacquer versus varnish

[Bob Hull]

Has anyone else used Crystal Varnish from DETCO.  It
has excellent flow properties brushed or sprayed. 
Great appearance but expensive.  We used it on a
soundboard recently and were pleased.

Bob Hull

--- BobDavis88 at aol.com wrote:

>  
> In a message dated 7/23/2007 7:06:47 AM Pacific
> Daylight Time, 
> scottwaynejackson at hotmail.com writes:
> 
> Thanks very much Bob. I am familiar with violin
> varnish which my brother 
> uses, but i had not considered that pianos used
> something comparable. I will 
> go explore the links that you have provided, and
> learn something else new.
> 
> May i ask where you obtained suitable varnish when
> you did use it?
> 
> Scott,
>  
> Varnish formulas vary in the type of resin, the
> proportion of oil, and the 
> amount of driers. The most common resins are alkyd,
> and polyurethane-modified 
> alkyd. The polyurethanes are more abrasion
> resistant, but in our experience tend 
> to make a white shatter if damaged, so are harder to
> touch up. They tend to 
> yellow more, and are more touchy to recoat. The
> alkyd is a little softer, but 
> easier to rub out and re-rub.
>  
> McCloskey makes a good alkyd resin varnish called
> Heirloom. [This just in - I 
> understand the parent company, Valspar, is changing
> the name to Cabot 
> Varnish.] It is also medium oil, which puts it
> between the short oil varnishes, which 
> are harder but less flexible; and the long-oil
> varnishes (like spar varnish), 
> which are unnecessarily flexible, and softer. We
> have used it on soundboards 
> (and a few pianos) for over thirty years, and don't
> have any complaints.
>  
> Hope that helps.
> Bob Davis
> 
> 
> 
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