[Shop-talk] L shaped fuel tank problem

[Matt]

  I have an old steel L tank out behind the shop that goes i the back of a pick up and I was considering refurbishing it for diesel containment.Overall it is in decent condition, but I planned to clean out the inside - maybe some acid treatment and a coat of fresh paint on the outside. On the bottom is a half inch hole and it may have been tapped, but the metal is not that thick.Generally I would think a socket head plug would go there to act as a drain, but I am not sure there is enough steel there to form a reliable seal.Any ideas on how to best treat this?  I could tap for a plug and try it... I considered welding or JB Welding some large washers to provide enough meat to allow a socket plug to work..Any other appropriate "stoppers" come to mind? I was also considering just sealing up the hole on the bottom and adding a drain on a vertical surface near the bottom.  MattColumbus, GA
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