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  #31 (permalink)  
Old 06-16-2008, 08:26 PM
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Quote:
Originally Posted by scrimshaw
You can use any styrofoam based foam like the pink owen corning insulation from Home Depot and then cover it with packing tape or polythene of any kind. Or simply use epoxy resin instead of the polyester or vinylester type. This foam is a fraction of the cost of any urethane foam, sands well and is strong.

BTW this thread is old.
The poly foam melts in the presence of resin but urethane is impervious. I realize the foam may initially be cheaper but you have to do more extra work to prevent melt down.

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  #32 (permalink)  
Old 06-16-2008, 08:40 PM
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The poly foam melts in the presence of resin but urethane is impervious. I realize the foam may initially be cheaper but you have to do more extra work to prevent melt down.
When building a full size car you could be looking at a difference of well over a thousand dollars. (Here in the USA anyway). I'll take the extra work!!
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  #33 (permalink)  
Old 06-17-2008, 05:52 PM
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Point taken ,and this stuff is made from oil too .. .$$$$$$$$$$$$$$
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  #34 (permalink)  
Old 06-18-2008, 03:39 PM
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Great thread!I cant wait to see more of "the card board car"!

EVIL
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Old 06-18-2008, 11:37 PM
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this thread was started two years ago guys, the project is probably dead and gone because there was no follow through
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Old 08-10-2008, 11:43 AM
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gallardo dimensions

Quote:
Originally Posted by deelow1
hey i was wondering were u got u dementions for the gallardo i too have a little project going anything would help thanx!!!!!
I got the dimensions from lambocars.com you can get any info you want about lambo's on there with lots of pics. Then I took those dims and the dims for the fiero as well as pics from all sides into a CADD program to make the required adjustments to my template. It works amazingly well.
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  #37 (permalink)  
Old 08-10-2008, 12:28 PM
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Quote:
Originally Posted by scrimshaw
You can use any styrofoam based foam like the pink owen corning insulation from Home Depot and then cover it with packing tape or polythene of any kind. Or simply use epoxy resin instead of the polyester or vinylester type. This foam is a fraction of the cost of any urethane foam, sands well and is strong.

BTW this thread is old.
The thread is old but the project is still ongoing I have been trying out some of the technique that everyone has suggested ( Thanks for all your suggestion I really appreciate you taking the time to lend me your knowledge and expertise, Keep it coming) I have had some failures and some success. I have had some sagging issues in some test pieces. So i'm going to try combining several suggestions I have received. I'm going to try filling the voids within the cardboard with expanding foam (In the can) to give long spans additional supports then coating the cardboard with shellac (or PVA glue which appears to just be elmers glue or wood glue) then fiberglassing over that I hope that there is no bad chemical reaction between the resing and the shellac so i will be trying it on a sample peice first. Expect new pictures or video soon, very soon!!!!

Thanks again
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  #38 (permalink)  
Old 08-10-2008, 12:45 PM
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still alive

Quote:
Originally Posted by ShadetreeBody
this thread was started two years ago guys, the project is probably dead and gone because there was no follow through
Sorry I haven't posted more regularly but I wanted toe able to show you guys some real progress before I posted again, so you guys would know I was taking all your suggestions seriously. I was also searching for local businesses like the local automotive technical school to sponsor the car to help pay for some of the cost and to make sure it turner out as good as it could. (Still waiting to hear back from the sponsors) But I have been working steadily, remember its just me and this is the first time i have attempted anything of this scale and I'm not rich so saving money where ever possible is a must. Plus there have been design changes. Initially I was going to make it a roadster but the bodywork required to this was way out of my league so I had to modufy the top and blend it into my design. When I get my video posted you'll see what I mean and where the project is but I think I have a clear pla of attack and should be posting more frequently over the next couple of months.

Don't give up on me yet. If you want to know if one of your individual suggestions worked let me know, believe me I've tried almost all ove them.

Remeber cardboard is your friend(LOL) If you build with it, It will conform!
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  #39 (permalink)  
Old 08-10-2008, 01:12 PM
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This car was formed up with cardboard and I covered it with duck tape,And then just started to lay up glass.
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  #40 (permalink)  
Old 08-10-2008, 03:53 PM
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coat the card board with PVA glue ( polyvinyl acetate) .It won't react with the glass resin and wont allow resin to seep through to the cardboard. Could get Really messy if you could imagine resin and cardboard stuck together...
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  #41 (permalink)  
Old 08-10-2008, 04:20 PM
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That's why I used the duck tape,Once done you just pull eveything out the inside.
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  #42 (permalink)  
Old 08-10-2008, 08:30 PM
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Quote:
Originally Posted by mercmad63
coat the card board with PVA glue ( polyvinyl acetate) .It won't react with the glass resin and wont allow resin to seep through to the cardboard. Could get Really messy if you could imagine resin and cardboard stuck together...
The cardboard is actually going to be part of thr completed project it will just be sandwich between the glass. Do you still recommend coating with PVC?
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  #43 (permalink)  
Old 08-10-2008, 08:44 PM
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I would actually to prevent resin soaking unneccesarily , but I cannot understand why you want to do it this way other than making it 'easier' to fabricate.
I would also expect the sandwich to fail,whether or not a sealer was used on the carboard because the cardboard's material structure will break down over time with the stresses imposed by normal car use.
That was why the the stuff was invented in the first place ,to enable car bodies,boats,swimming pools etc to be made quicker.
There was a very good book on fibreglas construction written in the 70's which contains more info than you will ever need
"Do it yourself Plastics"
Erich H. Hiemann
ISBN :0 263 06009 8
Published in the USA in 1975 by E.P. Dutton and company,Mills and Boon Ltd.

Amazon May have a copy,get one and it will answer every question you will ever need to know. Cheers!

Last edited by mercmad63; 08-10-2008 at 08:54 PM.
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  #44 (permalink)  
Old 08-10-2008, 09:01 PM
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I wouldn't leave that cardboard in there if It was me...
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  #45 (permalink)  
Old 08-11-2008, 07:04 PM
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Quote:
Originally Posted by mercmad63
I would actually to prevent resin soaking unneccesarily , but I cannot understand why you want to do it this way other than making it 'easier' to fabricate.
I would also expect the sandwich to fail,whether or not a sealer was used on the carboard because the cardboard's material structure will break down over time with the stresses imposed by normal car use.
That was why the the stuff was invented in the first place ,to enable car bodies,boats,swimming pools etc to be made quicker.
There was a very good book on fibreglas construction written in the 70's which contains more info than you will ever need
"Do it yourself Plastics"
Erich H. Hiemann
ISBN :0 263 06009 8
Published in the USA in 1975 by E.P. Dutton and company,Mills and Boon Ltd.

Amazon May have a copy,get one and it will answer every question you will ever need to know. Cheers!
Thanks, Merc
I'll go to amazon right now and look for it,

The cardboard forms are actually made on top of existing fiberglass body panels of the fiero. So everything has an original fit in the original mounting holes
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