Will this core material work?

[Mountain Mike]

Hi everyone. Im new to the forum. I am rebuilding a Johnsen skiff. I live in western NC and am having a hard time finding material. I would buy Divinycell but the closest I can find is 8 hrs away. I will be using the foam for a core in a polyester resin sandwich. I did find a company that has rigid polyurethane high density foam in a closed cell form. Will this work? The name brand would be Trymer. Anyone with insight would be be appreciated. Thanks.

[fallguy1000]

NO !!!



Trymer has a shear rating worse than xps!

Provide technical datasheet if you think I'm wrong.

Glass will fall off and it will crush.

Use as a former only for solid glass is okay.

[pee wee]

They sell Divinycell here:

https://www.boatbuildercentral.com/prod ... thickness/

as well as other core materials. They're great to work with and will pack and ship it right to you.

[Mountain Mike]

Thanks for the help guys. I will probably be asking more silly questions as a newb.

[OrangeQuest]

Thanks for the help guys. I will probably be asking more silly questions as a newb.

Better to ask silly questions than make silly mistakes.
We all have had our share of silly questions on here and some of us it was AFTER silly mistakes were made.

[OneWayTraffic]

I don't know about that brandname but I used Polyurethane foam for glassing over to make coolers and the like. Or under seats and benches for flotation purposes. It won't hurt to buy a sheet to experiment with. Nothing on the hull though, as FG2k already said.