For smoothing wax patternwork I use a $10 mini heat gun from Amazon. To aim the heat better, I made a press in tube extension. The end was formed...
I've never seen a source to clearly state the reason for the red color, but some have hinted that it is included to make the oil/catalyst ratio...
All patents from the '70s are long expired. It's17 years for most things (practical applications), maybe 25 years for pharmaceutical. Plant...
The capacity of the 1000w units may be pushed in the case of heat treating 4140, depending on size. 1000w isn't a fabulous amount of power,...
And always makes things difficult. You want cheap and safe and low CTE and low melt temperature and geometry insensitive. Sounds like what you...
For small repairs and fillets, I use a hot melt mix applied with a small soldering iron, almost a wax pen. The mix is 10 parts damar resin, 5...
Rose's metal is pretty good, cadmium free. Roughly half bismuth, quarter lead, quarter tin; melts at the boiling point of water.
Another principle that could be used is curie temperature, the temp at which a ferromagnetic material stops responding to a magnet. Cobalt, for...
Another reason for an allowance for movement at the mount is to limit breakage. Bells have to deform significantly to sound well. Massive as they...
Mostly crucible geometry, partly crucible mass, partly crucible material. A crucible that just fits inside the coil draws much more than one with...
I have two zvs units, both bought on eBay from seller 'wilson-su'. One about 4 years old, 2kw; one about 2 years old 2.5 kw. I've never killed...
I bought a commercial version of a loop top burner a while back. It had two tiny holes for the flames, drilled slightly away from the loop plane,...
Local to me, with perhaps a broader line of supplies: https://www.baileypottery.com/store-dept-clay-chemicals.html Something to keep in mind,...
Sodium silicate solution was the old timey fix for casting porosity. Put the casting in a bucket of solution, wait a few hours, pull it out and...
First thing I would try for the loose piece cohesion is some tiny fiber. Wood flour or plastic mini fiber (kind of like nylon lint), used in epoxy...
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