Sand casting boxes, or containers rather I guess, made from
strips of sheet aluminium and packing tape. It is a very flexible system.
The stuff on the left in the last picture is a staircase to reach the top
of the box for pouring.
Molten aluminium eats steel, so steel crucibles
have a rather limited lifespan and eventually leak.
Luckily there was not very much material in there
at the time. Aluminium incident 1 was a lot more
spectacular but no photography survived the event.
Or how to not melt particle filters while grinding steel.
Hot little pieces of steel tend to find their way inside the filters of this
mask where they generate a nasty smell of melting plastic.
This here add-on was made to tackle the problem.
The foils can be shaped into whatever form the wearer finds attractive.
Regular MIG welding gas such as argon or argon-CO2 mixture is rather expensive.
You have to buy or rent a bottle and the gas itself isn't exactly cheap. CO2 fire extinguishers
however can be had for next to nothing at a junk yard. Just make sure there's still some
in it. You will now be MAG welding which works fine for regular steels, but not for
aluminium. You will need to make some slight modification to the connection of your
gauge to get it to thread on to the CO2 extinguisher.
7018 are really nice welding electrodes. They can however be
a bit difficult to ignite. That is until you understand what's happening.
As a lit electrode goes out there forms around the tip a ball of
non-conductive flux. All you need to do is remove this with a file
and you're good to go. I can't claim to have invented this method
but I'll include it for anyone learning to stick weld 7018.