1708 mat for stringers

[cterrebonne]

Extensive the stringers out would make a really strong bracket. I am trying to go as light as possible. I am planning on using a aluminum bracket with out a platform. Sounds like 3 pieces of ply with knees glasses in is the ticket. I have a lot of woven roven. How would that help if used it between each piece of ply. Another thing, does the ply goes against the skin with just epoxy pb or do I put a piece of bi axle in between thE wood and the back skin?

[jasoncooperpcola]

What the hell is PB? I think you just laminate the ply straight to another piece of ply nothing in between. Same for the transom.

[phatdaddy]

peanut butter


the consistency of the mix of epoxy & filler

[Kracker Jack]

I put a layer of 18oz woven against the skin,I then let it kick slightly and then 1/4 inch notch troweled my thickened resin on and clamped my first layer of core. The reason I put the 18 oz on was to make up for some thickness lost due to grinding skin for prep. A dusky build on THT the guy put 3 layers of core and incorporated knees in his stringers as one piece.

[tartuffe]

Originally Posted by cterrebonne

Extensive the stringers out would make a really strong bracket. I am trying to go as light as possible. I am planning on using a aluminum bracket with out a platform. Sounds like 3 pieces of ply with knees glasses in is the ticket. I have a lot of woven roven. How would that help if used it between each piece of ply. Another thing, does the ply goes against the skin with just epoxy pb or do I put a piece of bi axle in between thE wood and the back skin?

You will want to coat the transom skin with a layer of PB using a notched trowel, coat the plywood the same way. Squeeze together and clamp. After it cures you will do the same thing with the next layer. A good amount will squeeze out and that is a good thing. Also coat the wood with alayer of straight resin to soak into the wood prior to covering with PB.

PB mix I use is resin, cabosil, and 1/4" chopped glass fibers. Those fibers add a great deal of strength.

[Kracker Jack]

Just like what Tartuffe said, you can also thump the transom with a rubber mallet after you apply your clamp pressure, this will seat the core and PB.

[cterrebonne]

Thanks for the info guys. Looks like I'm set. Just need to tear into it now