Epoxy or Poly resin?

[Entourage]

Well i had already ordered the epoxy from Merton's in Massachusetts so i might as well use it, the guy there talked me into it. I will post some more pics as i make headway, just have to get through this nasty storm coming our way tonight.

[Entourage]

Cutout will epoxy today

[lost2a6]

I used vinyl ester resin, it's not porous like poly.

[strick]

Originally Posted by hermco

Drywall screws are your friend!

I have lots of friends!!

strick

[hermco]

A new boat today typically has only an 8 lb. density sheet foam core. I see no problem with using the old tried and true wood and poly. Most boats back in the day were made that way and are still serviceable today unless water has compromised the core material.

[gofastsandman]

Penetration has been the enemy for millenia. For guys. For girls. For boats.

The old warped plane boats are still here. Good riggers are worth their weight in gold.

Not much emphasis on how I help the people who pay my bills anymore.

Cheers,
GFS

[pelican]

it's allways best when jobs like this are done in a building,out of the weather - you really want to avoid performing jobs like this,when things are exposed to the elements - rain water and wood isn't a good combination...
there's nothing wrong with using a wood core,provided that wood core is completley sealed...

[FishStretcher]

The room temperature epoxies that we buy are generally DGEBA chemistry with an amine hardener. The "BA" in DGEBA stands for bisphenol-a. The same BPA that everyone freaks out over in their water bottles. People do get sensitized to the stuff, to the point where they can't get near it. So protective gear is important. Otherwise you could wake up one day and not be able to work on your boat again with epoxy. Some might say that is not a bad thing...

Also, I seem to recall that the vinylester resins have a chemical structure of an epoxy on one end and a polyester on the other. But that composites class was a long time ago. It didn't seem to bother the guy who had DGEBA epoxy sensitivity. And it doesn't stink of styrene monomer like polyester resin.

[heynow2203]

So is your real job welding? We all need a welder!
I just see all the stock behind the transom cut out and I need a welder for a bow rail.

[Entourage]

No i am no welder by any means. My friend who is letting me use the shop is a machinist and an excellent welder. Does most of his work on the New bedford waterfront, 45 years under his belt if you are interested.