I second the river idea. Quick, easy and cheap and no dissimilar metals. Bruce 1994 C&C 37/40+
Sent from my Verizon, Samsung Galaxy smartphone -------- Original message --------From: "Matthew L. Wolford via CnC-List" <cnc-list@cnc-list.com> Date: 5/2/18 11:30 PM (GMT-05:00) To: cnc-list@cnc-list.com Cc: "Matthew L. Wolford" <wolf...@erie.net> Subject: Re: Stus-List Stripped threads question 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 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 _______________________________________________ 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