When bulding my workbench (truss rod construstion), I made the mistake
of tapping the stubborn truss rod ends with a hammer to move them in
place. As a result, the threads on the ends were smashed and will not
accept a nut. I tried to use a triangular file to "recreate" the
grooves, but this only made it stripped! Is there any way for me to
repair the ends or rethread them? I know this is not rec.metalworking,
but I figured someone here has done the same thing. Please list
multiple solutions if there are any. Thanks in advance!
1. Get a die and re-cut them...
2. If you've not torn them up too badly, file off enough to get past the
bad portion and go on..
3. Thread-cutting file...
4. Variations on above...
As a "trick", next time you need to do such an "adjustment", thread a
nut on the bolt/rod first and use either a wood block or a soft-face
mallet to drive...
If you have access to a tap & die set, you can 'chase' the threads back
into their original condition (or so) with the appropriatly sized die--
to find out the size, you can use the supplied nut & test - by hand &
gently with various sized taps until the correct one will easily screw
on to the tap. You may have to round over the peened end of the rod
slightly with a file. Most dies have an end that is larger than the
finished thread size. Screw that end on first. If you don't have a
die set, any decent machine shop can rethread the end for you on the
lathe. Hope this helps.
On 17 Jan 2005 08:18:08 -0800, firstname.lastname@example.org wrote:
Simplest way is to file or grind the end that is damaged flat until
the damaged area is cleaned up. Forget about "triangular files" they
are generally the wrong pitch angle anyway. You could always remove
the rod and start a die nut of the appropriate size from the opposite
end and run it the entire lenght of the rod but you will likely still
be faced with grinding/filing the damaged end done because the die nut
won't cut new thred in rod that is grossly swelled oversize.
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