tony.latham wrote:I've gone through about four gallons of Raka with the pumps and have not had a problem.
You've probably figured this out but it's important to mix small batches. Maybe a half cup at a time. Or it'll "go off" in the pot. (I buy a volume of disposable cups for epoxy work.)
Tony
KCStudly wrote:If you dig into the tech info on West System's website the design spec for the ratio is actually by weight; they just convert it to volume because that is how most people want to do it, as it seems easier. I like the precision and added assurance of using the scale to get it exact (although there is a small acceptable range that is specified in that same literature).
As to using a respirator, it really shouldn't be negotiable. If the fumes don't get you, the next thing you are going to be doing is cutting off excess fringe, sanding bumps and seams, roughing up surfaces for mechanical bonds, etc. I would not take a project of this scale on and attempt to rely on those cheesy disposable paper dust masks. For $32 dollars you can get a proper half mask with vapor cartridges that you won't mind wearing for long periods at a time, and it will last past this project and beyond. My lungs are worth way more than that. Learn how to disassemble and clean it regularly; let it dry and keep it in a sealed zip lock bag when not in use. For best results keep a clean shave, or at least make sure facial hair is contained; you don't want hair breaking the sealing bead around your cheeks and chin.
Tony, I guess I get hung up on all of the reports by people who used epoxy on their bent roof plywood, w/o glass,...
Carl01234 wrote:I have been emailing Raka and and my 10*x5 benroy it will take 17 square yards of cloth and estimated 2.1 gallons with 4 oz cloth to get 3 coats. I am ordering the 3 gallon kit. This is for my exterior side walls and roof only. I did the bottom in regular polyester because it was available at home depot. But I hate working with that stuff.
Doesn't anyone make a Kevlar add-in for their epoxy systems?
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