It's a little water pump that I messed up trying to pump garbage. "No problem" I go. Just take it apart and give it a good clean, LOL.
Step 1.
Applying my usual excessive force to an obviously seized thread ... ker-snap!
Step 2.
No problem, I'll just file some flats on it ...
Step 3.
... and put the vise-grips (Mole wrench) to work. Except that it didn't.
Step 4.
Then I drill a hole for an ex-RAF Ezy-Out (screw extractor).
Step 4a. missing pictures of endless soaking in Gunk, bashing the end, blow lamping, etc. ad nauseam.
Step 5.
At last, disassembled.
Step 6.
Cleaned up, reassembled and good to go ...