foam for a foam core
im gonna make a foam core and im windering if either of these are the right typse of foam. im pretty sure the 750g one is the right one but just checking.
Tags: foam
Views: 315
Replies to This Discussion
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Permalink Reply by Dale on
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uhhm. I honestly have no experience building, so I'll offer input until someone else comes along. but i'm pretty sure both of those foams are full of air which isn't good, you want a solid sheet of the stuff, not a can as it offers some form of strength to the layup.
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Premium MemberPermalink Reply by Andrew Jenkins on -
ok. thakns,
but im wondering, wht is this pour foam people are tallkinuig about. do you actually pour it or is that just a name?? cos that what i thought this was?
Dale said:uhhm. I honestly have no experience building, so I'll offer input until someone else comes along. but i'm pretty sure both of those foams are full of air which isn't good, you want a solid sheet of the stuff, not a can as it offers some form of strength to the layup.
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Premium MemberPermalink Reply by The Dave on -
It looks like you're confusing moulding foam for core foam. Core foam, which is what you get in surfboards for example, needs to be semi-structural and comes in sheets or blocks and you lay up composite around. Moulding foam is for making the tool (shape) to mould a composite against - it's not going to be part of the deck itself.
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Permalink Reply by Kanufi on
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Don't bother with the can method ( not totally sure what u where going to do there)
Check out if there are any boat/ yatch builders near by. Go see them and tell them what your doing and was wondering if they had any off cuts these guys usually deal with the latest stuff in foam and glass. I've tried it and scored some wicked carbon Kevlar matting for free. Yatch dudes are easily bribed with beer as well.
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Premium MemberPermalink Reply by Matthys on -
some guys on the fish tried the expanda foam and it did not end well. id get some experience in working with composites first too..
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Premium MemberPermalink Reply by nathan on -
klegecel or divinicell is probs what your after, as kanufi points out used commonly by boat builders and yachties etc.
BUT...the shit costs $$ per sheet, is easy to work with comes in 8mm, 10mm, 12mm sheets of varying densities. from memory h80 is least dense h120 is very dense and is generally used as a marine standard when building floors etc (so should be good for boards huh?) I have used the 8mm, and 10mm with varying layups either side,(carbon, multiaxial glass etc) excellent results. With a good triaxial glass (even just biaxial) and a uni directional carbon you can get really stiff light weight with a simple construction process
Regarding the blue high density moulding foam, i have seen an exploded rayne board, looked like blue foam inside to me??
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Premium MemberPermalink Reply by Steve on -
Fgi has divinycell and klegecell. You have to buy a full sheet though, from memory bout $180 for the h80 ( meaning a cubic metre weighs 80 kg). I think the super dense stuff is h200. This is another reason foam cores are expensive to buy. Don't use the blue foam for a core. It may be ok for a short while but it will eventually shear under the stresses and is just a waste of your time
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Premium MemberPermalink Reply by Fitz on -
Start with Balsa instead of foam dude,
It's cheaper and easier to work with.
If you don't use the right resin with the fibreglass and foam you will end up with a messy big pile of goo because it can melt the foam.
Composite method is for advance board builders and takes alot of skill and equipment to do it right.
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