Re: [Harp-L] Reed plate screws / tapping reed plates

[Zombor Kovacs <zrkovacs@xxxxxxxxx>]

The simplest solution I have on mind is drill the
lower reedplate holes up to get the M2 bolts through
easily, and tighten the bolts with nuts. You might
need longer bolts. In this case, buy longer bolts :-)

If the thread in the reedplate is worn, you might
either try to re-cut the treads AND use new bolts. For
this, you will need M2 threadcutter or whatever size
your hole is. If your thread is not badly worn, you
might be lucky and with a new bolt you get good
clamping force. Do not use the old bolt if it is not
in excellent condition.

If you drill the holes up and want to have thread in
it, you need to cut new, larger thread and use larger
diameter screw, and thus drill up the hole in the comb
as well. But I do not recommend this.

And there is a last attempt if somebody is not happy
with the ones above to repair the thread. Clean the
holes with the worn thread with some solvent. Re-cut
the thread with the original size thread cutter, if
there is anything left of the old one. Smear some good
epoxy into the threads only (do not block the hole).
Use epoxy with high strength (I mean not 5 minute
epoxy, it is shit). Wait a few hours (depends on the
curing time of the epoxy). Now drill the hole with a
drill size which goes easily through a threaded hole
which is in good condition. In case of M2 use M1.5 for
example. Finally re-cut the thread. Dont tighten it
too hard during assembly. However, I do not recommend
this either.

Bolting through and tightening with a nut should work
in any case and perhaps the simplest way if your
bolts/holes are worn. 


Zombor



--- John Kerkhoven <solo_danswer@xxxxxxxxxxxx> wrote:

> This is a timely subject for me, so I'll add my own
> question to Mojoman's.
> 
> I've got a couple of stripped screwholes on Sp20
> plates. Yes, yes, I know, I
> need to more careful tightening the screws and not
> overdo it. It's on older
> harps that I've worked on so they've been screwed
> and unscrewed numerous
> times and now a few holes don't catch.
> 
> New screws might help and I still need to find a
> hobby shop close by that
> sells M2 x 10mm as recommended by Michael Timler
> when he was still with
> harponline.
> 
> It's not a critical problem, because I seem to get a
> good seal all the same
> with the available holes. Still, any suggestions for
> a remedy?
> 
> John
> 
> 
> 
> 
> > Hey there harp mod geniuses.
> > I want to find out how I would drill/tap an MS
> reedplate to accept
> additional reed plate screws. Using standard drill
> bits (1/16, 3/64) , the
> factory brass reed plate screws do not grip...the
> screw or the hole gets
> stripped.
> > Any instructions for this mechanically challenged
> Mojoman?
> > Thanks!
> >
> > --
> > Check out the "Mojoland" section of my website for
> live recordings, info
> on the band and upcoming events!
> > http://www.andymeehan.com
> > _______________________________________________
> > Harp-L is sponsored by SPAH, http://www.spah.org
> > Harp-L@xxxxxxxxxx
> > http://harp-l.org/mailman/listinfo/harp-l
> 
> _______________________________________________
> Harp-L is sponsored by SPAH, http://www.spah.org
> Harp-L@xxxxxxxxxx
> http://harp-l.org/mailman/listinfo/harp-l
> 



		
__________________________________ 
Start your day with Yahoo! - Make it your home page! 
http://www.yahoo.com/r/hs