interestedparty
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| posted on 7/8/10 at 04:22 PM |
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comparative costs of polyester and epoxy laminates?
Im looking at doing some bodywork bits myself, and would like to use epoxy instead of the usual polyester. Main reason is the polyester is too smelly
(might not get away with it  )but the extra strength of epoxy would be good as well. I've even wondered about ising glass cloth instead of
mat.
I know epoxy is quite abit dearer than polyester, but Im wondring if anybody happens to know how much dearer it is (on average).
I will be looking up some prices anyway, but there's lots of people here who know lots of stuff, so thought I would ask anyway
As some day it may happen that a victim must be found,
I've got a little list-- I've got a little list
Of society offenders who might well be underground,
And who never would be missed-- who never would be missed!
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PSpirine
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| posted on 7/8/10 at 04:29 PM |
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I think it's something like 4-5 times the cost (or at least was when I was looking around a while back) i.e. A LOT! 
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balidey
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| posted on 7/8/10 at 04:31 PM |
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epoxy is nasty stuff to work with
Dutch bears have terrible skin due to their clogged paws
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interestedparty
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| posted on 7/8/10 at 04:35 PM |
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quote:
Originally posted by balidey
epoxy is nasty stuff to work with
In what way? I've worked with it before and not had a problem, better than polyester in my opinion (no styrene fumes)
As some day it may happen that a victim must be found,
I've got a little list-- I've got a little list
Of society offenders who might well be underground,
And who never would be missed-- who never would be missed!
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v8kid
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| posted on 7/8/10 at 04:55 PM |
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Skin rot.
Watch for old stock when it crystallizes
Cheers
You'd be surprised how quickly the sales people at B&Q try and assist you after ignoring you for the past 15 minutes when you try and start a
chainsaw
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MakeEverything
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| posted on 7/8/10 at 04:56 PM |
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Ive often wondered if epoxy resin and a normal fibre cloth would work at all?
Kevlar cloth is relatively cheap, as is glass fibre cloth.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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interestedparty
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| posted on 7/8/10 at 05:08 PM |
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quote:
Originally posted by v8kid
Skin rot.
I always wear gloves if Im doing anything like that, but I will watch out
quote:
Originally posted by MakeEverything
Ive often wondered if epoxy resin and a normal fibre cloth would work at all?
It certainly does, I've done it myself many years ago, making cowlings for helicopter engines etc.
As some day it may happen that a victim must be found,
I've got a little list-- I've got a little list
Of society offenders who might well be underground,
And who never would be missed-- who never would be missed!
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v8kid
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| posted on 7/8/10 at 06:09 PM |
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Don't you have to use a powder coated fibre? It's so long ago I forget but there is summat about that.
cheers
You'd be surprised how quickly the sales people at B&Q try and assist you after ignoring you for the past 15 minutes when you try and start a
chainsaw
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iank
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| posted on 7/8/10 at 07:32 PM |
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You can suffer from a severe allergic reaction to epoxy if you're sensitised to it. Once sensitive you can't even go near the stuff
without much unpleasantness. Different people sensitise with different exposures, some on first exposure, some take many years. See
http://www.fram.nl/workshop/controlled_vacuum_infusion/allergy.htm for gory details
For relative costs
Polyester is around £17 for 5kg
Epoxy £84 for 6kg
Both prices from http://www.cfsnet.co.uk/
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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Neville Jones
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| posted on 7/8/10 at 08:11 PM |
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The smell of the styrene in poly resin pales into insignificance to the degree of the extremely high carcinogenic nature of the epoxy hardeners. How
do I know?? You guessed it.
Stick with poly or vinylester resin, and put up with the smell, or put a big fan in the window, blowing outwards.
Cheers,
Nev.
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interestedparty
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| posted on 7/8/10 at 09:10 PM |
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I note that there are dangers with epoxy, but can't help wondering why the stuff is still made, and why so many people seem to work with it
without wearing full positive pressure body suits.
As some day it may happen that a victim must be found,
I've got a little list-- I've got a little list
Of society offenders who might well be underground,
And who never would be missed-- who never would be missed!
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alistairolsen
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| posted on 8/8/10 at 07:59 AM |
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Epoxy as said is just as nasty and somewhat worse.
Its about 4-6 times the price depending where you go.
You cant use it with chopped strand matt, there is no styrene to dissolve the emulsion that binds it.
youll never lay up a nosecone or suchlike with cloth unless youre very good with laminates.
My Build Thread
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interestedparty
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| posted on 9/8/10 at 05:38 PM |
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quote:
Originally posted by alistairolsen
You cant use it with chopped strand matt, there is no styrene to dissolve the emulsion that binds it.
youll never lay up a nosecone or suchlike with cloth unless youre very good with laminates.
That's a very good point.
Anyway, I've discussed it with the powers that be, and it's been decided that I can do it with conventional polyester resin.
As some day it may happen that a victim must be found,
I've got a little list-- I've got a little list
Of society offenders who might well be underground,
And who never would be missed-- who never would be missed!
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