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| scotty b |
 Jan 5 2011, 03:17 PM
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#1
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rust free you say ?  Group: Members Posts: 16,375 Joined: 7-January 05 From: richmond, Va. Member No.: 3,419 Region Association: None  |
I have to make a custom bumper for a car. I am familiar with the mold process but what I do not know is what type of expandable foam I should buy. I am planning to make a wooden box ( form) to pour the foam in, then attatch it to the car and start cutting and sanding to get the desired shape. What I need is something that will expand and still be closed cell enough to handle cutting, sanding and shaping, then can handle bondo being applied to get that oh so smooth ready to be painted, finished buck. (IMG:style_emoticons/default/wacko.gif)
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| Dr Evil |
Jan 5 2011, 10:35 PM
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#2
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Send me your transmission! Group: Members Posts: 23,041 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region 
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Plastic wrap can work as well, no?
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| scotty b |
Jan 5 2011, 10:42 PM
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#3
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rust free you say ? Group: Members Posts: 16,375 Joined: 7-January 05 From: richmond, Va. Member No.: 3,419 Region Association: None |
QUOTE(Dr Evil @ Jan 5 2011, 08:35 PM)  Plastic wrap can work as well, no? No, the final buck needs to be perfectly smooth and actually painted as if it were the finished bumper. That then gets coated with mold release, gel coat and then the glassing begins. THAT makes the female MOLD that the real parts are made from. That is why the initial buck needs to be bondo'd and worked to perfection, any imperfection will come out in the gel coat on the female mold. |
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Posts in this topic
scotty b fibreglass experts Jan 5 2011, 03:17 PM
underthetire Tap plastics used to sell a resin foam, it was pre... Jan 5 2011, 03:38 PM Rod Use polyurethane two-part foam, The foam from diy... Jan 5 2011, 03:53 PM jd74914 :agree:
I don't have much experience, but if ... Jan 5 2011, 04:16 PM iamchappy Have you considered using Styrofoam and shaping it... Jan 5 2011, 04:30 PM URY914 Try looking at some of the projects on here.....
... Jan 5 2011, 05:09 PM
andys
Try looking at some of the projects on here.....
... Jan 7 2011, 10:48 AM RJMII This place seems to have a lot of information. I d... Jan 5 2011, 05:12 PM kg6dxn Order some surf board blanks :headbanger:
There... Jan 5 2011, 05:14 PM URY914 I see the pink insulation boards that you can get ... Jan 5 2011, 05:55 PM stepuptotheMike One of the shows I saw on TV used sheets of floris... Jan 5 2011, 06:16 PM URY914 The spray on foam seems to be used also...
Befor... Jan 5 2011, 06:18 PM r_towle Scotty,
Use the simple spray foam and cover it en... Jan 5 2011, 07:16 PM mepstein comes in 914 colors Jan 5 2011, 08:23 PM plays with cars Use the pink stuff from Home Depot. You can rough... Jan 5 2011, 08:44 PM Dr Evil I have used the spray foam. Cheap and easy, oh ya ... Jan 5 2011, 09:07 PM scotty b The sheets and particularly spray foam just isn;t ... Jan 5 2011, 09:08 PM stepuptotheMike B)--><div class='quotetop'>QUOTE... Jan 5 2011, 10:26 PM URY914 B)--><div class='quotetop'>QUOTE... Jan 6 2011, 06:01 AM buhs914
B)--><div class='quotetop'>QUOT... Jan 6 2011, 09:49 AM Dr Evil Shhhh
Yer phone is broke <_< Jan 5 2011, 09:29 PM URY914 Yes the green foam used by the flower folks will n... Jan 5 2011, 09:41 PM Phoenix-MN This place has all the "glassing" suppli... Jan 5 2011, 10:02 PM stepuptotheMike
Plastic wrap can work as well, no?
that's fo... Jan 5 2011, 10:39 PM scotty b
Plastic wrap can work as well, no?
that's f... Jan 5 2011, 10:43 PM Borderline The polyester resin will eat up a lot of stuff and... Jan 6 2011, 10:22 AM r_towle Florist foam, the green stuff, holds up to "s... Jan 6 2011, 07:59 PM Bartlett 914
Still, the cheapest way to go is pink foam for ... Jan 7 2011, 09:39 AM scotty b O.K. I'm going to try the pink foam since it i... Jan 6 2011, 08:23 PM RJMII
Woo hoo!! Pics ROCK!!! :hea... Jan 7 2011, 09:20 AM 76-914 Stay away from from the polyester resins; unless y... Jan 7 2011, 10:20 AM geniusanthony The cafe racer board I frequent also swears by flo... Jan 8 2011, 12:30 AM GS Guy I believe Blueovalz did his car using the florist ... Jan 8 2011, 09:54 AM |
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