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Hey guys and gals,
I am going to be making my own seat and rear end i have made a form out of the blue 1.5"-2" house foam shaped it with a drywall rasp, i know if i lay the fiberglass on it the fiberglass resin will eat the foam is there a way to seal the foam other then covering it in tuck tape(or any type of tape) or plastic? and how many layers should I lay?
stopped by Canadian Tire today and i will be using fiberglass mat then on the final layer I'm going to use the fiberglass cloth.
I've laid up directly on florist foam with out and issues but that's not what you are using (just an FYI for the future). Ditto pretty much to what Olive said. Al foil, plastic wrap, hefty bag. Everything will work.
If you live somewhere it gets cold try window shrink wrap like the stuff you use to seal the cold out in the winter. It conforms nice then just coat it with release wax before laying glass. Also pm roccitycafe as he makes fiberglass seats and might have some good info for you.
oooh.. never thought of that... that stuff shrinks with a blowdryer too.. conform to the shape better eh?
I might have to try this in a few weeks when I make another seat..
thats a good idea think i have some still around the house from the start of fall/winter might have to go digging for it though haha... yeah not sure if CT has the epoxy resin think its the 3M stuff i'll have to take a look when i go back to get it. mmmm good to know about the epoxy resin not working well with the mat fiberglass.
whats the difference between the mat and cloth fiberglass? just the finish or is one stronger then the other?
Cloth is stronger. BTW, mat doesn't work well with epoxy because the binder they use to hold the glass fibers together with in the mat fabric disolves in polyester resin but not so much in epoxy, so the mat doesn't loosen up and form to the mold as well.
so would the mat be easier to work with being my first time working with fiberglass? would it be a good idea to do a layer or two of the mat fiberglass then a layer of cloth? or do you have to stick with one type of fiberglass?
so would the mat be easier to work with being my first time working with fiberglass? would it be a good idea to do a layer or two of the mat fiberglass then a layer of cloth? or do you have to stick with one type of fiberglass?
You can mix mat and cloth no problem. I usually only use cloth because it is stronger and I prefer to work with epoxy. Mat builds up thickness quicker but also weight. To be honest, its been such a long time since I did anything with mat, I don't remember if it was any easier to work with than cloth or not.
I usually use mat,in addition to cloth, where I need more strength and/ or thickness. I have a huge roll of very thick mat if you need some. Pm your address and what you need if interested.
Use 6-10 ounce mat, 2 layers is plenty, 3 in areas where you're going to use mounting bolts. Wouldn't hurt to sandwich a small piece of sheet alum. in there where the bolts go through, in between layers so to speak.
Or, if you're feeling manly and lucky and think you can get it in one shot, use 24 ounce woven roving and shoot it in 1 layer. But I wouldn't recommend it!!! That stuff is hell to work with...
Speaking of fiberglass mat, I used some leftover mat to build an upholstery pan for my KZ750's seat. The pan is practically bullet-proof. So much that I had to abandon my plans of using an electric stapler to secure the vinyl cover. Ended up having to drill holes and rivet it into place. Maybe it was a case of too much hardener or... user error?
My point is the same as what others have said: Use mat only where strength is needed.
Speaking of fiberglass mat, I used some leftover mat to build an upholstery pan for my KZ750's seat. The pan is practically bullet-proof. So much that I had to abandon my plans of using an electric stapler to secure the vinyl cover. Ended up having to drill holes and rivet it into place. Maybe it was a case of too much hardener or... user error?
My point is the same as what others have said: Use mat only where strength is needed.
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is there a way to seal the foam other then covering it in tuck tape(or any type of tape) or plastic? and how many layers should I lay? 
