coozer
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| posted on 24/5/10 at 01:18 PM |
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Making FG sheets?
While there seems to be a fair bit of carbon activity at the moment I would like to ask about making a flat fibreglass sheet (or 6 )
I have a large 1000x500mm double glazing unit and I'm not fussed about gel coating.
Can I just lay up a flat sheet on the glass? Tissue then two 450g matting?
Do I need to polish the glass, or, will it release readily enough.
Plan is to make some sheets, to construct a floor then bond the whole lot together with more 450g to make a couple of footwells.
LG,
Steve
1972 V8 Jago
1980 Z750
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tegwin
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| posted on 24/5/10 at 01:23 PM |
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I have used a giant mirror in the past...
I stretched some clingfilm over the mirror.... then laid up 5 layers of CSM with plenty of resin... once set it simply peeled off the clingfilm 
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www.verticalhorizonsmedia.tv
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coozer
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| posted on 24/5/10 at 01:53 PM |
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Nice Cheers!
1972 V8 Jago
1980 Z750
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CNHSS1
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| posted on 24/5/10 at 02:08 PM |
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mould wax on the glass will give a much better finish than the clingfilm and if you used a reasonable thickness of gel coat its self coloured and no
need to ever paint it. Glass or for larger sheets, that white painted 8'x4' hardboard waxed up is great too.
6 coats wax, wipe on, dry, then buff off.
reasonable coat of gelcoat
2 x 300gsm
and will be thin enough to use like art card, cut with sheers or decent scissors, will bend round single curve bends too (stronger than joins).
Once in place add extra layers of 450 and will look dead profesh-knee-all
"Racing is life, everything else, before or after, is just waiting"---Steve McQueen
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BenB
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| posted on 24/5/10 at 03:16 PM |
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I've made some in the past just laying up directly onto melamine (contiboard). Works well and comes off very nicely.
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alistairolsen
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| posted on 24/5/10 at 03:20 PM |
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As a rule, polish anything you want to mould against. The best stuff is beeswax polish in a yellow tin from composites suppliers.
Contiboard works well apart from the texture, glass is perfect.
As said, 2 layers is plenty, 300 for lightness, or maybe 450.
make sure you get a sheepskin roller to apply the resin, a metal roller to compact the laminate and some acetone to wash it all out in afterwards.
My Build Thread
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Neville Jones
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| posted on 24/5/10 at 06:08 PM |
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If you value your life and/or bollocks, you'll use aluminium for your floor, 2mm minimum for a road car.
If you have to use grp, then you'll be wanting at least 3, but more like 4 layers of 450gsm.
Just noticed under your forum id, Building '4x4 off roader'. You'll be wanting AT LEAST 4layers of 450gsm if you have any
respect for your or your passenger's lives.
A couple of quick coats of a hard carnauba based wax will release most mouldings from from glass.
Cheers,
Nev.
[Edited on 24/5/10 by Neville Jones]
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coozer
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| posted on 24/5/10 at 08:39 PM |
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quote:
Originally posted by Neville Jones
If you value your life and/or bollocks, you'll use aluminium for your floor, 2mm minimum for a road car.
If you have to use grp, then you'll be wanting at least 3, but more like 4 layers of 450gsm.
Just noticed under your forum id, Building '4x4 off roader'. You'll be wanting AT LEAST 4layers of 450gsm if you have any
respect for your or your passenger's lives.
A couple of quick coats of a hard carnauba based wax will release most mouldings from from glass.
Cheers,
Nev.
[Edited on 24/5/10 by Neville Jones]
Sorry, don't understand... its a 4x4 that is, 'glass body on a massive box section chassis.. AKA Jago Jeep. Original floor was wood, I
want a dropped floor as I've raised the body and as such the floor will be non structural sitting on various bits of box section.
Plan is to make some flat sections, construct the floor and tranny cover then cover well with, as you say, another couple layers of matting to bond it
all together. Just somewhere to rest my feet
LG,
Steve
1972 V8 Jago
1980 Z750
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Neville Jones
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| posted on 25/5/10 at 12:48 PM |
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It's a 4x4, and you WILL take it off road?
What happens when a tree stump or big rock tries to come up through your 'non structural' floor? It'll be VERY structural at
that point.
The ' ' may not seem too smart when you're fronting up to a hospital with leg injuries.
[Edited on 25/5/10 by Neville Jones]
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