Making Fiberglass Parts
#1410651
03/29/13 10:05 AM
03/29/13 10:05 AM
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Joined: Feb 2009
Posts: 1,532 off the grid
340B5
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When making fiberglass parts; What should be used to help release the glass from the mold?
Yeah, it's got a smallblock.
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Re: Making Fiberglass Parts
[Re: 340B5]
#1410654
03/29/13 10:23 AM
03/29/13 10:23 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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There are a few releasing agents you can buy... I made the hood on my car(no products made for a P body so I made a fiberglass hood first, then made a carbon fiber one thats on the car now
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Re: Making Fiberglass Parts
[Re: MR_P_BODY]
#1410655
03/29/13 11:04 AM
03/29/13 11:04 AM
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Joined: Feb 2009
Posts: 1,532 off the grid
340B5
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After doing a search, it looks like I could just buy a good carnuba wax and wax the mold heavily?
How do you work w/ carbon fiber to get bends if you buy a flat sheet?
Yeah, it's got a smallblock.
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Re: Making Fiberglass Parts
[Re: 340B5]
#1410657
03/29/13 11:32 AM
03/29/13 11:32 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Romeo MI
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Quote:
After doing a search, it looks like I could just buy a good carnuba wax and wax the mold heavily?
How do you work w/ carbon fiber to get bends if you buy a flat sheet?
Carbon fiber looks just like fiberglass.. its a soft material that comes in rolls but black... it uses a resin like fiberglass but you put it in a special baggy and apply a vacuum to it to get all of the excess resin out of it
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Re: Making Fiberglass Parts
[Re: MR_P_BODY]
#1410658
03/29/13 12:33 PM
03/29/13 12:33 PM
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Joined: Feb 2009
Posts: 1,532 off the grid
340B5
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Ok, so then the thin flat sheets of carbon fiber are easily workable to make a front air dam or spoiler?
Jcc; point taken on the wax.
Yeah, it's got a smallblock.
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Re: Making Fiberglass Parts
[Re: dustaboy74]
#1410660
03/29/13 02:12 PM
03/29/13 02:12 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
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The mold needs draft and draw, the angles of the part must allow it to release. I have the equipment to bag parts, it is not always necessary, the thing it does do is remove the excess resin and thus reduce the weight without reducing strength. Another factor on composites, 100% of the load/stresses goes through the stiffest fiber (carbon) until it fails, then it transfers the load to the glass if you are using a multi fiber composite structure..... The grain direction of a unidirectional is critical, 4* off of the direction of the grain can lose up to 99% of the stiffness in that direction . Tim
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: Making Fiberglass Parts
[Re: astjp2]
#1410661
03/29/13 02:43 PM
03/29/13 02:43 PM
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Joined: Dec 2003
Posts: 22,696 Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,696
Bitopia
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Quote:
The mold needs draft and draw, the angles of the part must allow it to release. I have the equipment to bag parts, it is not always necessary, the thing it does do is remove the excess resin and thus reduce the weight without reducing strength. Another factor on composites, 100% of the load/stresses goes through the stiffest fiber (carbon) until it fails, then it transfers the load to the glass if you are using a multi fiber composite structure..... The grain direction of a unidirectional is critical, 4* off of the direction of the grain can lose up to 99% of the stiffness in that direction . Tim
That 4Deg comment is surprising, and why bother with fiberglass when using CF, unless its Kevlar or nomex? i also would make sure everyone understands the resin/glue adds almost no strength to the the item, mainly adds weight, its all about the fiber, but it must be held in place by the resin.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: Making Fiberglass Parts
[Re: 340B5]
#1410662
03/29/13 02:57 PM
03/29/13 02:57 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
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Posts: 52,972
Romeo MI
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Quote:
After doing a search, it looks like I could just buy a good carnuba wax and wax the mold heavily?
How do you work w/ carbon fiber to get bends if you buy a flat sheet?
Is that what your trying to make... the pre made flat sheets arent what you want... they will always be flat unless you bend it(but it will go back to flat as soon as you take off what is making it hold the shape).. your better off using the raw cloth and using a mold... the mold is the hardest part to make unless you have a part to mold off of
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