Here's my poor's man vacuum setup.
Saran wrap!
It allows me to force the fiber to stick at stiffer angle and use muuuch less resin. You push the bubbles out and nothing can come back in.
You can massage it while it cure with your bare hand, and it never stick
So you leave the Saran Wrap on until it dries? Does it take longer for the resin to cure? And then it just pulls off? Looks like a pretty handy trick. :amazed:
You actually have to let it cure entirely to be able to remove it. But when it's cured it goes off with little resistance.
I wouldn't advise using several sheets of wrap, not sure what would happen if you make a wrap-epoxy-wrap-epoxy sandwich.
It leave very shiny surface, so shiny I think Kastern took it for waxed surface.
I don't think cure time is affected, at least nothing I could notice.
To accommodate my heated but still rather cool garage (I'd say 60°F) I often use a heat gun. With the wrap, I heat from the backside because the wrap tends to heat shrink and puncture.
I've found two downsides so far :
-You get resin buildup all around the glassed area, mainly because you've been able to squeeze it out from the fiber but also because you need it as a plug, to keep the center area airtight
-You get all the plastic wrap wrinkles cast in the resin.
So I take a bit longer to sand it down.
But those are totally outweighed by the 'bubblelessness' of the resulting work, the number of additional layer of fiber you can glass in one pass safely and the ability to follow more complex shapes.
And just for this later point, I wish I knew the trick when glassing my fender edge in a quest to make them sharper. I would a divided my two or three the time spend.
Oh well, better late than never.:clobbered:
Note: I have layed down another layer yesterday, when I cast it out tonight, I take picture and post.
