| Title: | Racers and Racing |
| Notice: | As long as it's not NASCAR or F1 or Drags... |
| Moderator: | RHETT::BURDEN _D |
| Created: | Tue Aug 08 1995 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 391 |
| Total number of notes: | 4486 |
I was thinking about the possibility of making a new nose for my race car. Someone told me that there is some stuff you can use to make a buck. The buck is made to the shape of the nose, then you lay fiberglass on it to make a mold, then you use the mold to make the new part. I just forgot what I was supposed to use to make the buck. I think he said you could lay the material on in sheets, sand and cut it and lay more on if needed. Anybody know what the material is?
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 233.1 | COMET::LUKENS | Thu Nov 15 1990 11:00 | 6 | ||
> Anybody know what the material is?
Styrofoam ?
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| 233.2 | I've done it, but I don't like it. | LEDS::LEWICKE | IfItsWorthDoingItsWorthDoingToExcess | Thu Nov 15 1990 11:49 | 15 |
You can use almost anything that is easy to shape. Styrofoam is
not very good because the resin will dissolve it. Starting off with
window screen and lumber to get near the shape, then adding fiberglass
and bondo is one way that I've seen done. I hate fiberglass so i
generally hook together cardboard and wire reinforcements and put the
glass right on on the car. It doesn't look the way a lot of people
think it should, but it does work.
You can also work right on the car and make something that is
smooth and right, then take a female mold from that and make multiple
copies of the part. The advantage is that you leave the mold home so
it never gets crashed.
Good luck, the stuff is extremly unpleasant to work with,
especially if you get into sanding.
John
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| 233.3 | RELYON::BABINEAU | Thu Nov 15 1990 13:31 | 15 | ||
Foam is the material to use, however not styrofoam, the type to
use is polyurethane, large cell polystyrene, or a type called
CLARK foam. Also the type of resin used may or may not attack
the foam, epoxy resins usually will not attack the foam, but
polyester resin may depending on the foam. Depending on the
complexity of the piece being made, you may also use instant
urethane foam, similiar to the type available in aerosol cans
used for insulation, but it is available as a two part system
in 1/2 gallon quantities.
As for the resins, epoxy resins are typically more expensive
than polyesters, but are easier to work with and have a longer
working time they are also easier to sand. If money is an object,
you might make the plug using foam and epoxy, and then make the
mold and the parts using polyester.
using epoxy
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| 233.4 | great book | NYEM1::MILBERG | I was a DCC - 3 jobs ago! | Fri Nov 16 1990 19:46 | 21 |
There is a really good book on doing fiberglass that discusses all
aspects of it's use on cars. One of the Osprey Restoration Guide
series:
How to Restore Fiberglass Bodywork
Miles Wilkins
Osprey Publishing Ltd.
distributed in USA by Motorbook International
I have a copy (as should all Lotus owners). If you live in or want to
come out to NJ, you can look at the sections (Moulds and Moulding) in
mine. Or send me mail and I'll copy the section when I get back from
vacation and send them to you.
BTW - you have to translate from English to American and most of the
products referenced are not available here.
-Barry-
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