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I know this is a very late reply to this topic (haven’t been able to
get online) but I thought it might be useful to others…
I would worry more about how I am going to anneal and pickle the metal in between the rounds of chasing, which I figure will be more of a challenge in an apartment.
When I was studying gold and silversmithing and in 3rd year at uni I
was lucky enough to meet a first year student who had been working as
a trade jeweller and had left to study to be a painter. He was
really interested in the work I was doing and gave me heaps of
advice. I used to do a lot of large pieces and the oxy torch wasn’t
always available so he showed me how to anneal large pieces of metal
with a simple LPG torch (with a large tip).
He took a whole bunch of firebricks and “built” up three walls with a
roof. I would place the metal inside the construction and aim the
flame in from the front. We found it most effective if you build the
structure without much space around the metal and take a soldering
mat and hold it across the opening at the front - to close it off as
much as possible whilst still having the torch in there and still
being able to see.
Using this technique I was able to anneal a lot of items that I just
simply couldn’t do only using the LPG torch on its own.