My only criticism is the choice of galvanized steel. If (when)
you spill molten silver or gold onto this, you may find it stuck,
melted into and partially alloyed with the galvanizing zinc! You
can pluck it off, but that little bit of zinc that peels off with
it will change the alloy for the worst so you’ll have to sell it
for scrap. On the other hand, if you use UNgalvanized steel it
won’t be affected at all, except for some dirt or rust that will
float out as slag in remelting.
Another suggestion: get a piece of old garden hose the length of
the circumference of the splash shield, and cut a slot the full
length of it so it can be pressed on the top sharp edge of that
sheet metal; it makes a comfortable wrist rest while steadying
the torch or melting probe.
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