I have cut up joist hanger in the past to make a metal fixing plate https://www.toolstation.com/shop/p94912 70p from Toolstation
well that depends on what the shop 'sells' (if anything). lurid black, purple and pink if it is a tattoo parlour, ... etc
Don't think so, flogas say the tare weight is 34kg shop/cylinders/flogas-gas-cylinders/47kg-propane-gas-cylinder-refill>
Brilliant shop, and still there opposite Buckhold Road.
I even once broke into the wrong shop.
You can't just nip into your local shop and buy one though. They are simply not available in normal high-street shops.
Mine will go down to 40mm shop/hand-tools/pipe-wrenches/150mm-straight-strap-wrench/p/KEN5881500K>
Also, that lawnsite.com forum you turned me on to is fairly helpful, in a talking shop sort of way.
This is a good reason to shop locally for such things.
There are lots of 240V things that don't have a neutral; central air, electric furnace, assorted shop tools, electric heaters, etc. Chris