Tap removal

[Clive S]

Ok after making this for a HTD belt. upon drilling & tapping for the grub screws the tap broke full depth so I had a go with alum.
it took 500g of alum and 12 hours on the induction hob (the dish was on a piece of 3/8 steel plate) in two sessions at just below boiling point and having to keep it topped up with water ever 45min.

Result tap was dissolved completely but did discolour the aly a bit, I could have made a new one quicker but wanted to try out the procedure. If I had to do it again I would have use a much deep container and suspended the part on a copper wire.

[Doddy]

12 hours on the induction hob

Your not married, are you!?

Mine (the wife) complains if I even try to cure dry-film solder mask in the oven.

Women!

[magicniner]

If I had to do it again I would have use a much deep container and suspended the part on a copper wire.

This -

https://www.youtube.com/watch?v=bhzbpDgTvXU

Use a 3L pop bottle to keep it topped up unattended

[Clive S]

Your not married, are you!?

Mine (the wife) complains if I even try to cure dry-film solder mask in the oven.

Women!

Ah Yes, You need somebody to keep an eye on it to make sure it was topped up

[routercnc]

Nice post Clive glad it worked out. You might remember me messing about with alum to remove a broken tap without much success. I think keeping it hot must have helped you which I think you advise me at the time (?) but I couldn't get near the hob

Luckily I don't break taps any more (ahem) . . .