foam
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July 17, 2012 09:44 PM - 744 Views
Years ago I built the Willys dash using foam which was so easy to form I did it with my hands. The resin would not melt it and just busted the foam away after the 'glass had set. Can't remember what type of foam it was other than green! Got to make some ribs for the back door on the Willys and want to use foam and cover with mat. Solutions?
- Newest Post: July 19, 2012 10:07 AM
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Have an upholstery book that details making panels etc from chip board and spray contact adhesive. I used this process to make my lower dash panel and console.Chip board is just thin cardboard that you cut up into strips ,spray adhesive on and layer til you get the shape you want. After several layers and dry you use a small sanding disc to shape and smooth. Then it can be upholstered,carpeted or used as a form for glass. It's kind of a fun project that can be made into any shape or size you need.Our transmission kits come packaged with the stuff so I have all I need.
Sounds like the foam florists use in some flower arrangements to hold the stems in place. Just guessing!
Any Autobody supply house or Boat repair supply house carries this foam , its a 2 part mix and pour into a form and then carve it out, make sure it is for fiber glass
Jerry, are ya tryin to strengthen the door from the inside?
If so, just glass in coremat.
Same process as used in puttin strength in floors, 1/4's etc.
after you make your part rinse out the foam with acetone. i've used regular green open cell florist foam .
When you say resin I take it you're using fiberglass resin..
What you want is Urethane Foam. A rigid urethane foam or rigid polyurethane foam...
Yes it is the same the florists use the green stuff. but it does not need to be green.
You can sand it with anything including your finger... And shape it easily.
Yes you can buy it 2-part as well try here...
http://www.shopmaninc.com/foam.html
or go to a craft store and buy small blocks of the green stuff. If need be glue them with
3M spray or gorilla glue I believe works.
The problem with other foams is the heat and/or reaction from fiberglass effects and melts it.
Or you need to cover it with something 1st to protect the foam
If you use epoxy you can use other foams...
But you want the "green" easy to shape stuff.. It's a little spendy, but very easy to shape.
Yes right on with the acetone.. or leave the foam attached if that's an option
Don, What is COREMAT? Had to go to Las Cruces today so I stopped into a Hobby Lobby and found blocks of the green stuff for $4 a block. Got two blocks. Filled the truck on the Miata and lugged the engine with the extra weight. Was actually thinking of using expanding foam after the ribs are 'glassed in place and the shape correct. Foam would add thud to the door without weight. Thanks guys.
Jerry, do a google search, kinda hard to splain.
Also ya could have used balsa core wood, cut to shape and glass in.
Stiffined up many a race boat hull that way in my drag boat days
I see what COREMAT is now. Have seen it used in roofs and floors of street rods for years. I did pick up some balsa today while in Las Cruces just to fill the door gaps a little. Maybe a picture or two in the future.
tube from 36 in paper sliced in half long way then glassed over
used it on many race car hoods since they would always cave in from the scoop. makes for a pretty stiff brace. paper tubes also make good sanding blocks.