Re: URGENT!! residue on bronze!!


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Posted by Robert Oblon on May 19, 1999 at 20:47:56:

In Reply to: URGENT!! residue on bronze!! posted by Wanda Ritt on May 14, 1999 at 03:17:59:

It sounds as though the castings may be very porous and have captured the Hcl and even trying to neutralize the castings with a base you may have a very porous and spongy casting and the making of bronze desease. If you have access to a sandblasting machine or can have it blasted by someone that will be the best way to strip off your wax and patina. If these casting are small in nature and can be immersed into a container of water with a base and then into a container of clean water. The base, being alkalyne can cause similar problems, which you may compounded from the start with your Hcl patina? Using another chemical to strip away the wax and patina may create more problems that can snowball. In the future, if you are going to experiment with acid, etc. try heating the casting slightly to help remove and flush out the salts left from your chemical use. Consontrate on developing a casting(s) with better surface integrity.

Sorry for any bad spelling as I can't find my glasses at the moment and squinting doen't seem to help.

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