[Rhodes22-list] Reconnecting the Tabernacle Screws Following Sacrificial Failure

[Graham Stewart]

Chris:

I understand now what you meant when you proposed moving the holes. That
would work, no doubt, but seems unnecessary to me.

All I did with the holes that were located in the wrong place was to fill
them with epoxy.

I expect that the base plate probably left some marks on the fiberglass that
should allow you to locate the plate properly. The other option might be to
carefully screw the screw into the hole without the base plate and see if it
centers itself. The hole might be elongated at the surface but might not be
so distorted at the bottom.

In my case I had neither old holes or marks to guide me so I made an
accurate template out of hardboard of the base end  of the mast and located
it by putting the sail track of the template over the pop top slider when it
was in the closed position. That told me where the mast has to be. I had
marked on the template where the hinge bolt was located and transferred that
location to the mast step. I then aligned the base plate with the slot
markings and marked the location for the holes. 

When I place the screw into the epoxy I do it before the epoxy is entirely
cured. It is soft enough to take the screw much like wood and is more
forgiving. If you wait for the epoxy to cure the hole needs to be made with
a drill bit that is exactly the right size for the screw or you might find
it difficult to drive home and might actually break the head off the screw.
Epoxy takes about 24 hours to cure but is relatively solid in a few hours
and that is when you should drill the new hole and install the screws. Using
wood slivers would also make the hole much easier to drill but I would still
do it before the epoxy cured.

Graham Stewart
Agile, Rodes 22, 1976
Kingston Ontario


-----Original Message-----
From: Rhodes22-list [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of
Chris on LBI
Sent: Monday, August 3, 2020 7:32 AM
To: rhodes22-list at rhodes22.org
Subject: Re: [Rhodes22-list] Reconnecting the Tabernacle Screws Following
Sacrificial Failure

Graham,

In thinking about drilling new holes, I was thinking that I would also drill
new holes in the tabernacle base plate so the location of the base plate
would not move. 

But your point about hole location raises an interesting additional problem
for me that I had not considered. Each of the three existing holes in the
mounting block below the base plate is now oblong, sort of like two holes
slightly offset from one another in both the x and y axis. So I'll have to
decide which of the two possible centers is the one I should use when
remounting the tabernacle base plate.

That is an interesting observation that Wood Slivers and Larger Holes are
not mutually exclusive.

I feel your pain relocating the base plate 3 times. When you did so, how did
you repair the holes that were not located correctly? Also, do your screws
bite into the fiberglass as well as the wood block underneath?

Thanks,
Chris



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Long Beach Island
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