[Shop-talk] Replacing a damaged helicoil

[Randall]

> The thread hole is slightly 
> enlarged around the
> outside edge of the coil, meaning the threads are only 
> holding on the bottom.

Sounds like time to go to the next level, a Keensert or equivalent.

If you do go with a Helicoil again, I would cut off the insert and leave no
threads in the enlarged portion of the hole.  They aren't going to be doing
anything anyway.  And if you can, convert to a stud in that location (so it
can be screwed in to exactly the bottom of the hole).

-- Randall