I've become intrigued with a solid insert called a Keensert mentioned by a
number of you. It's similar to the timecert inserts, with the exception of
having a "key" that you tap down to lock the insert in place.
Check out http://www.newmantools.com/kee.htm and see what you think. They
are supposedly used in the aviation industry.
There is a "thin-wall" and "heavy-duty" version. For the 3/8" internal
thread size that I need, I would drill out a 29/64 hole for thin-wall, or a
33/64 hole for heavy duty. All the specs are at the above website.
On my worst hole, the 29/64 still didn't provide a smooth surface --
remanants of threads were still there.
So now I'm agonizing over whether to drill them all 33/64, or just the one
that needs the larger size since I don't know if 4/64 extra material taken
out on all the holes is going to cause a problem -- and yeah, I'm getting
tired!!!!
And I think in some of the holes the heliocoil will hold.
So the question for tonight is, drill everything out at 33/64, or mix and
match with 29/64 and heliocoil?
Maybe I can use the whole car as a coffee table....
Bruce
1980 Inca Yellow TR7 5-speed convertible
Chapel Hill, NC
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