Hi Royce, You may get by with material commonly used for our boiler lagging-FibreFax I think it is called. It's similar to asbestos in look/feel but a ceramic fiber product. I usually place it in my small crucible before I make a lost wax casting to protect the inner surface of the expensive crucible. Mine is about 1/16" and I can mail you a small piece. I don't know your exact problem, but in a similar soldering situation, I just slid a piece of sheet metal to act as a barrier. Also what might work is to coat the piece not to be soldered with investment material (which is used for making molds in the lost wax casting process). The problem with this material though is it is very corrosive because of its low ph. I also seem to remember a moldable ceramic product made especially to be a heatsink in soldering applications- may have been offered at MicroMark. You could probably get some at a Jewelry supply.
Vic in CA ----- Original Message ----- From: "Royce Woodbury" <[EMAIL PROTECTED]> To: "Multiple recipients of sslivesteam" <[EMAIL PROTECTED]> Sent: Friday, April 12, 2002 4:41 PM Subject: Re: Thin refractory material > Hi Gary. What was the total thickness of composite ? > > royce in SB > > Gary wrote: > > > I got a heat shield at a plumbing supply house. > > It has two layers. A soft aluminum layer with some sort of insulating cloth > > attached. > > I just shape the material around what I am soldering. It saved me from > > setting fire > > to my house when soldering 40 feet of pipe with a bunch of valves and turns. > > Pipe > > was right against insulation and wood in many places. > > ~Gary - Eugene, Oregon > > > > > Hi listers. I need some thin refractory material to protect one > > > part while silver soldering another in close proximity. Anybody > > > know of a source of 1/32 to 1/16" thick heat shielding material > > > ? I looked in my wife's hair dryer and there is a metal shield > > > between the elements and plastic exterior, but then there is a > > > blower that carries the hot air away. I only need a couple of > > > square inches of the stuff and would be happy to buy some if I > > > knew where. (I checked at Air Liquide up the street (they sell > > > bottled gases and silversoldering supplies)and the thinnest > > > stuff they had was 1/8" - too thick). Any suggestions ? > > > > > > royce in SB > > > > > > > > > > > > > > > >
