Douglas Fir Boom Question

[DumnMad]

Dowels are good.
If you try to straighten it choose warm humid weather, or in the shed, wet the timber and warm up the area to be straightened. Less likely to crack.
Its obviously been wet in order to rot and this is a possible contributor to the sag. I suggest seal it with Cetol when you've finished.

[SV Windrush II]

Originally Posted by DumnMad

Dowels are good.
If you try to straighten it choose warm humid weather, or in the shed, wet the timber and warm up the area to be straightened. Less likely to crack.
Its obviously been wet in order to rot and this is a possible contributor to the sag. I suggest seal it with Cetol when you've finished.

:thumbup:

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[Starboardyacht]

Originally Posted by DumnMad

Dowels are good.
If you try to straighten it choose warm humid weather, or in the shed, wet the timber and warm up the area to be straightened. Less likely to crack.
Its obviously been wet in order to rot and this is a possible contributor to the sag. I suggest seal it with Cetol when you've finished.

Ok, added 5 3/8" dowels 8" apart...
Man I have no idea what I'm doing, but I sure am having fun doing it!
Thanks for all the tips...

And I must say I am in complete awe of how much work gets done on that schooner !

[Starboardyacht]

Too late for the wet bending, but not too late to put rigging back as it was instead of flipping... Hope to be sailing her to Beaufort this weekend for the wine & food festival...

Bye the bye, not sure if this is correct but I'm coating spars with 2 coats of epoxy from Home Depot not WE$T... Then 3 coats of Helmsman spar varnish ...
Cheers!

[minaret]

Originally Posted by Starboardyacht

Attachment 79808Attachment 79809

Ok, added 5 3/8" dowels 8" apart...
Man I have no idea what I'm doing, but I sure am having fun doing it!
Thanks for all the tips...

And I must say I am in complete awe of how much work gets done on that schooner !

You really should have scarphed that. I wouldn't rely on it much like that. A dowel used this way is called a treenail (pronounced trunnel). They won't make any difference to the weak spot you've created with that joint though. I'd think it would be easier to just laminate a new spar now, given the size. If you do it right, then it'll be dimensionally stable instead of cupping or twisting, as solid spars do.




Putting cetol on a spar?

[JPA Cate]

Minaret,

You just got there too late! Great advice, though. Good on ya.

.....When're you - all casting off?

Ann

[minaret]

Originally Posted by Ann T. Cate

Minaret,

You just got there too late! Great advice, though. Good on ya.

.....When're you - all casting off?

Ann

Soon! Insanely busy...

[Starboardyacht]

I'm confused why this may fail...?
A scarf joint did not seem to make sense because the joint would be front to back the lap joint allow me to go side to if that makes sense

[minaret]

Originally Posted by Starboardyacht

Attachment 79831 I'm confused why this may fail...?
A scarf joint did not seem to make sense because the joint would be front to back the lap joint allow me to go side to if that makes sense

Yeah, that's not a lap joint. It's a simple butt, or what's known as a "Dutchman". That's not a compliment in the ship building world. A scarph is always stronger than a butt. Often much stronger. That butt is only as strong as the thickest part of the solid member which remains. Don't trust it.