Thanks, Josh. With seven exit plates, each with four mounting holes, I can
think of 28 reasons to not drill and tap each hole.
The original exit plates had six holes each (as opposed to the current four),
all of which were filled with aluminum screws (held in place with epoxy) that
were ground off at the surface before the mast was repainted six or seven years
ago. I have no interest in undertaking that sort of job, which I believe to be
unnecessary.
Backing nuts would be too difficult to hold in place to screw into given the
relatively small opening of the exit plate. Not practical.
I kind of like your rivet idea, and I forgot about JB Weld. Any other thoughts
out there?
From: Josh Muckley via CnC-List
Sent: Wednesday, May 02, 2018 9:23 PM
To: C&C List
Cc: Josh Muckley
Subject: Re: Stus-List Stripped threads question
I forgot to mention that when I had my mast rebuilt the boatyard welded all of
the old vestigial holes closed before painting. Of course you're probably not
even considering something to this extent.
Josh
On Wed, May 2, 2018, 9:20 PM Josh Muckley <muckl...@gmail.com> wrote:
You can rivet them. Mine are. Aluminum rivets won't corrode the mast.
There really isn't a good reason not to go up to a #12 machine screw.
Of course there are epoxy materials such as JB weld in liquid or in a stick.
I'm not sure that they would produce a lasting repair.
What about backing nuts?
Ever heard of riv-nuts? They go in like rivets but are threaded for a
machine screw fastener.
Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD
On Wed, May 2, 2018, 9:12 PM Matthew L. Wolford via CnC-List
<cnc-list@cnc-list.com> wrote:
Listers:
Currently doing some mast work and needed to remove and reinstall a
couple stainless steel exit plates. The plates are held in place with four
stainless machine bolts (10-24 or thereabouts), which screw into threaded holes
in the aluminum mast. I discovered that the threads were stripped in several
of the holes – probably due to dissimilar metals. Aside from drilling and
tapping new or larger holes (which I prefer to not do), is there some other way
to reconstitute the threads to hold the screws in place. Strength is not
really an issue. I was thinking about coating the screws in epoxy or
something, but I figured someone on the list may know some other trick. Thanks
in advance.
Matt Wolford
C&C 42 Custom
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_______________________________________________
Thanks everyone for supporting this list with your contributions. Each and
every one is greatly appreciated. If you want to support the list - use PayPal
to send contribution -- https://www.paypal.me/stumurray
_______________________________________________
Thanks everyone for supporting this list with your contributions. Each and
every one is greatly appreciated. If you want to support the list - use PayPal
to send contribution -- https://www.paypal.me/stumurray
