The idea below to soak the threads in oil was in response to the broken tool(s) above.
Due to the angle of the block, it's not possible to actually leave anything next to the threads since it will simply slide down the block.
So a 'holding chamber' was made to let the oil sit and penetrate the threads.

The block was cleaned of oil and wiped down with acetone on a rag.
The a small piece PVC pipe was silicone to the block and let cure.
Lube oil (in this case cutting oil) was poured into the PVC to soak the stud threads overnight.
This made removing the stud with an 18“ pipe wrench easier the next day.
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