Retired - DIY ingot mold for your metal melting hobby from a stainless steel square tube

Mold did not pass the ingot release test and unfortunately had to be retired before starting its adventure. The mold was not releasing the ingots without using excessive force so it had to be let go.

[@towboatjeff]

Probably if you would have welded corners and then rounded it over with a die grinder it may have worked better