1973 196 rebuild question

[Duffy1470]

Thank you Ulysses. To summarize, overdrill but not all the way through, fill hole with some sort of smeg (thickened resin, 5200, etc). that seems straight forward enough.  At that point, depending on access, you either screw or bolt. Excellent

[Duffy1470]

Just re read your post. I get the Allen wrench technique now. It took a minute but That makes lots of sense. Think I saw 8n Rick's build where he hole sawed out an inch and refilled with something substantial like the filler you mentioned.

[RickK]

The key is to protect the core when you drill a scupper in. My new transom is marine plywood but I still wanted to protect it. I didn't want any water to get to the core.

[McAllgeyver]

Oh and the wood gutter plugs were not fun to remove. I did put some angle on the gutter sides but wish I had put more.

[Duffy1470]

Glassed in some of the front storage area.  Will give details at bottom of pics






Mixed poly resin with the white powder stuff and cut 4" long 1/8" wide strips. Wow, that changes the nature of thickened resin. Seems much more fibrous and I'm hoping stronger and less likely to crack.

[Duffy1470]

Okay, last post was choppy. Wife was talking my ear off and it was either get in a fight and post or ...... everyone knows this story.. Cut mat into little strips and mixed it with the poly. Underneath the deck thing  is a spacer/piece of honeycomb bedded in the thickened , fibrous resin on top of the stringer. On top of the spacer/honeycomb is a layer of mat and some of that "special" resin. On top of that is the deck thing and you can see in the pics how I glassed that in with 1708.

Does anyone know if polyester fumes are combustible?  I am laminating in an enclosed Insulated barn that is heated with gas and a fireplace. It hasn't exploded yet, but am wondering how big of a dumb a$$ I am.

[McAllgeyver]

 Not sure about the fumes combustion but you feel sick when your done.

[Duffy1470]

I am using a good respirator and keep the cartridges fresh so not to bad. I learned early on in this process that not using a respirator leads to sore throats. Feeling sick is an understatement if you don't have the right gear.

[RickK]

"the white stuff" - are you referring to Cabosil? It's a good thickener.

[Duffy1470]

Yes, cabosil. I can't ever remember its name. Adding the cut up matte totally changes the thickened resin. I hope it's for the better. It's kind of like
a puked up cat hair ball. Gotta be stronger.

[Duffy1470]

Glassed port storage stringer thing in.

[Duffy1470]

I have only done one layer of 1708 on the joints. Does it need two layers? Seems really stout the way it is but I am no expert at fiberglass. The lam is technically structural but is extra structure, so in my mind it is all additional strength VS the original deck which had no supports that were glassed to the stringers. Thoughts everyone? 1 or 2 layers 1708?

[Ulysses485]

You might be able to get away with 1 layer of 1708 but if its easy to do now, might as well. Cracks found later will be much harder to notice or get access to. I am a big fan of overbuilding stuff though! haha. The way I understand it is that fiberglass will flex a little or it should not, just depends on the design. If built with enough bulkheads for it not to flex, any areas not designed to flex, will crack at the weak points. HOWEVER, I am NOT an Engineer but my interpretation of reading a lot.

Looks like your getting close to closing the decks up! Looking good! 

[Duffy1470]

You approach of over building mirrors mine depending on how long I have been glassing. If at the beginning of a lam then I overbuild, but towards the end I usually do less, unless ther is leftover resin.  Then something is getting glassed.

Put the other bulkhead in yesterday evening. Came out pretty good.

[Duffy1470]

Finished the storage compartment. Glassed the step in. Glued it with gorilla glue construction adhesive ultimate also. I like that stuff more and more. I hope it lasts good.