I removed the rear bumper of a '92 Integra and modified it to a new look that I really like. Now because its made of the original bumper and wood...then wrapped in fleece and fiberglassed, I need to make a mould because for one, it weighs too damn much and so on. I'm just wondering what is the easiest way to make a mould, so that I could reproduce the bumper and throw it on...I'd love to show pics, but my camera's at my buddy's place.
One more thing, if I'm making a mould of this piece I'm assuming that it has to be perfectly sanded and everything right?...cause that's the one thing I hate doing and still has to be completed
Thanks for your help!
To make the mold:
Wrap the bumper in aluminum foil.
Put wax releasing agent (so you can cleanly take the new fiberglass off) I've seen PROs use McGuiar's Number 8 show room finish car wax (I'm sure you can find some other products).
Put fleece on the bumper + paint it with resin so it gets tacky.
You can dip the fiberglass strips in the raisin to soak and then lay them down (very iportant and it helps minimize air bubles). To make it smooth use a rubber roller.
Some people just dip the fiberglass srips and lay then down without the fleece (for a bumper I'd use the fleece).
Don't use bondo. Use metal glaze or similar https://www.detailgear.com/index.asp?PageAction=VIEWPROD&ProdID=614 product.
It is a lot easier to work than bondo.
Make the mold first.
Then sand and use the glaze putty for small holes.
The glaze is a lot easier to sand than the bondo.
I really don't see the point in using fleece here.It's for getting a shape, not adding structure. Just lay the FG on the foil. Also unless your mold comes out damnnear perfect, I doubt you will have much luck using only metal glaze. Get some Rage Gold, it sands easier than bondo.
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Nik
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Check it out.Thx for the responces...One more thing that I'm wondering about is if I'd like to make multiple pieces (bumpers), I've gone to shops and seen (and I have no idea what they're made out of) larger pieces of whatever...where the outside of the piece looks like trash, and the inside is a perfect match of the (in this case it would be of a) bumper...so I'm assuming that they just make the mould from the inside of this piece and pull it out...this sounds a lot easier then anything else, is it? And how is it made?
Thx again
oonikfraleyoo - My bad that is what I was reffering to but forgot the name. Rage Gold (same stuff Team Alpine uses to build those nice sick demo cars hommie)....
I guess you can do like I said in the first post dip the fg strips in resin and lay them down.
Mould - The inside is coated with a release gel and maybe they use FGlass or some ABS plastic mix and vacume forming presses (or liquid plastic).