Conformable coremat?
Discussion
Does anybody have a supplier of a good conformable coremat? I have Lantor and Spherecore and they are OK for flat form or mild curves but no use for complex curves or tight stuff.
I seem to recall on a Google search that there was something called scoreboard(?) which was a coremat with a lattice of cuts to allow it to be bent. Can't find it again.
I seem to recall on a Google search that there was something called scoreboard(?) which was a coremat with a lattice of cuts to allow it to be bent. Can't find it again.
i have used the stuff you mean, a boat building mate gave me some, but told me its no longer available. Was green in colour, approx 10mm thick and had squares scored into it at approx 6-8 deep with a thin glued on covering. Its reasonably rigid but flexing along the score lines 'breaks' it but the backing weave keeps it in place.
it conforms pretty well around compound internal curves, but the conformity is restricted by the size of the squares (approx 12m/sq from memory). Since using it all up, i have been using ordinary 10mm core foam sheet and scoring it half way through with a knife. When flexed it breaks along the scores but ahs no backing to hold it in place. To be honest its no big deal as when you lay it on wet resin it stays in place and of course the next layer of mat over the top stops it going anywhere. Not quite as user friendly as without the backing sheet, but does you you the chance to vary the size of the squares to suit differing compound curve shapes.
Also use coremat 3mm with pin hioles in it. Really good to add stiffness without excess weight, but be careful you dont go mad with the resin as it can soak it up like a sponge if you ladel the resin on! apply resin sparingly with a sponge roller, add the dry coremat and then roller a sparing layer of resin over the coremat ready for a wetted layer of CSM or wove over the top. worth working over well with an ally paddle roller to ensure the cores fully engaged to the resin layers above and below though and to rid it of air.
it conforms pretty well around compound internal curves, but the conformity is restricted by the size of the squares (approx 12m/sq from memory). Since using it all up, i have been using ordinary 10mm core foam sheet and scoring it half way through with a knife. When flexed it breaks along the scores but ahs no backing to hold it in place. To be honest its no big deal as when you lay it on wet resin it stays in place and of course the next layer of mat over the top stops it going anywhere. Not quite as user friendly as without the backing sheet, but does you you the chance to vary the size of the squares to suit differing compound curve shapes.
Also use coremat 3mm with pin hioles in it. Really good to add stiffness without excess weight, but be careful you dont go mad with the resin as it can soak it up like a sponge if you ladel the resin on! apply resin sparingly with a sponge roller, add the dry coremat and then roller a sparing layer of resin over the coremat ready for a wetted layer of CSM or wove over the top. worth working over well with an ally paddle roller to ensure the cores fully engaged to the resin layers above and below though and to rid it of air.
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