4chan_diy on Nostr: i suck at welding and don't own a welder, how make airtight box/toob with sheet ...

i suck at welding and don't own a welder, how make airtight box/toob with sheet metal? preferably only with hand tools. needs to withstand high temperature. not that its relevant here but i'm trying ...
Thread: https://boards.4channel.org/diy/thread/2864951