Anyone know a better source of two-part foam than AS&S?

"Ramblin Rover - The Vivisector of Solihull" (RamblinRover)
08/18/2014 at 19:25 • Filed to: None

!!!error: Indecipherable SUB-paragraph formatting!!! that is. No reason.

DISCUSSION (12)

roflcopter > Ramblin Rover - The Vivisector of Solihull
08/18/2014 at 19:29

Would Grainger or McMaster Carr have it?

Ramblin Rover - The Vivisector of Solihull > roflcopter
08/18/2014 at 19:35

Either are good at "having anything". Both fail from time to time at "...at a reasonable price". Actually, now that I've checked, both do have aerosol can/dual mix nozzle setups available, but not at that great a price in either case, and neither has liquid mix/self foaming two part closed cell. Looking like AS&S at this point - which, if you're not aware, is *the* supply house for builders of plane kits.

Jeff-God-of-Biscuits > Ramblin Rover - The Vivisector of Solihull
08/18/2014 at 19:40

You know, with a name like that, they better offer a do it yourself Spruce Goose kit. I would be pretty disappointed if I couldn't get one delivered to my house in say, 5-10 large shipping containers.

Ramblin Rover - The Vivisector of Solihull > Jeff-God-of-Biscuits
08/18/2014 at 19:44

You'd think they would. You know they should. You'd suggest they *could*. But they don't.

roflcopter > Ramblin Rover - The Vivisector of Solihull
08/18/2014 at 19:46

I've never needed anything like that, but I tend to use those other two for most raw material needs. I'll definitely log it away for future reference though.

Ramblin Rover - The Vivisector of Solihull > roflcopter
08/18/2014 at 19:49

You can get wacky aluminum girder type stuff from them, carbon fiber, fiberglass gelcoat, stainless and aluminum fasteners, specialty wood, aircraft grade canvas and doping compounds... the list goes on and on.

TheNeonDriver - Now with More BMW! > Ramblin Rover - The Vivisector of Solihull
08/18/2014 at 19:53

Why do you specifically need two part?
I could suggest foam, but not a lot of them are two part mixtures...

roflcopter > Ramblin Rover - The Vivisector of Solihull
08/18/2014 at 19:59

That's awesome, I typically use McMaster for all my of mold making and rubber needs, I can get most of the fiberglass/carbon materials I need through boating shops where I have business accounts at locally for super cheap.

Ramblin Rover - The Vivisector of Solihull > TheNeonDriver - Now with More BMW!
08/18/2014 at 20:23

The problem with most single-part foams is that they're air-cure, which means they can't be used to fill cavities that don't breathe. The second issue is that many/most air-cure foams aren't inherently closed-cell, so they don't seal watertight, they're not as strong, and they're otherwise not suitable for building composite structures. They have to be air-permeable to cure, which limits layer thickness and produces weakness/uneven hardening if it's thick.

They have spray two-part foam kits, but they're based around filling large voids, and depend more on the spray to foam up the compound rather than foaming agent in the liquid. In addition, because they're spraying from two nozzles, they don't automatically get as even a mix. Thus, the above is the best solution for water-tight structural cavity filling and casting: you mix up the liquid, pour into a mold or cavity, and it expands to fill.

uofime > Ramblin Rover - The Vivisector of Solihull
08/18/2014 at 21:46

Freemansupply.com is a good source for that sort of stuff, though I dont' see 2 part foam on their site. they're very helpful if you call them as well

corvairsomeday > Ramblin Rover - The Vivisector of Solihull
08/19/2014 at 18:57

Fibreglast.com has a bunch of stuff like this. I've used this on my boat. Good stuff, great company.

http://www.fibreglast.com/product/6Lb-Mi…

If you use the promo GRIDIRON before the end of 8/20/14, they'll give you another 20% off, I think.

Ramblin Rover - The Vivisector of Solihull > corvairsomeday
08/19/2014 at 19:28

Neat. Thanks for the info. It looks like the actual quantities of liquid are comparable: Aircraft Spruce & Specialties' product going for a bit more, but also producing more coverage. What it would come down to is strength vs. area filled, and I'm not sure on that yet.