I don’t do casting. I fabricate everything I make. I guess it could
be a “too much heat” problem as I like to use hard solder for almost
everything (although I am following protocol more frequently now and
using easy in some subsequent steps where using hard might make
everything fall apart - been there, done that too many times).
I don’t get the nasty black gunk so that’s not a problem - I empty
out the liquid after each tumble and rinse everything. I’ve just
spent 67 UKP on my tumbler and am very pleased with it so there’s not
much point paying a further $46 for a Midway vibratory tumbler. I got
mine on the recommendation of others who use similar (and in one case
the exact same) machines and am glad that I opted for that one.
You have to tumble yours for longer because the action of the
vibratory tumbler is not as aggressive as the rotary tumbler so you
can’t make a direct comparison. Apparently, according to those who
use rotary tumblers, 2 hours is long enough to get orange peel and
they recommend less time. So I’ll carry on and experiment to reach
the optimum time for what I’m making.
If it ever dies (which apparently is not likely for many years),
I’ll look at the Midway, but for now, its convenience and shorter
time scale to achieve a good result is well worth what I paid for it.
Thanks anyway for the tip - I’m working on not giving the metal too