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ANTIQUE FURNITURE RESTORATION DISCUSSION BOARD
Posted By: Bob Klein <bobklein1@cox.net> (ip68-1-111-93.pn.at.cox.net)
In Response To: Shellac (John)
Date: 3/6/5 23:19
You don't need to add anything, shellac is hard enough. There are a couple of sites that show a 'pencil hardness test' but I find it useless as it is not a scientific test by any stretch and, it is a one pound cut of unknown origin.
Shellac has been used for 4000 years.
some accurate info
Floor polish polymer hardnesses greater than 12 KHN signifies excellent resistance to wear. An all-acrylic polymer, RHOPLEX B-924, for example, which has outstanding wear properties, has a hardness of approximately 15 KHN. For comparison, acrylic plastic sheet has a hardness of 22 KHN; shellac has a hardness of 13-15 KHN, and that of carnauba wax is 7 KHN.
Hope this helps however late...
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