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altaran
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Group: Forum Members
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Thank you for your answer ! So I'm looking for 1000 to 2500 holes/ m² plus the channels between the holes. That makes a good couple of hours of work to save 1.2kg/m². I may end up trying to make a nailed plank that I just have to hammer on the foam to speed up the process a little. I just have to see if nail holes are good enough. I will test that this weekend as I have some foam left from my previous wet lay project.
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Warren (Staff)
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Drill it with holes every 2-3 cm. Holes only need to be 2 to 3mm diameter. On the mould contact side, score lightly between the holes too. This gives channels for the resin to flow under the foam once it has travelled down the hole to the bottom layer.
Even if you did it in stages, youd still have to bond the foam to the cured carbon somehow as its unlikely on the second infusion that the resin would fully flow underneath.
Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant
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altaran
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Group: Forum Members
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Hi Easy Composites team, How much does the PVC foam needs to be drilled to be suitable for resin infusion? What diameter and what distance between holes should I use? Would it work if I infuse a first skin on the mould surface, let it cure, remove all bagging consumable but leave the actual skin on the mold, add the foam and infuse the second skin? Will the foam bond well to the first skin this way? I agree using soric would be less hassle but 1.3 kg/m² of resin weight added to the part is non negligible.
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alebassa
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Matt (Staff) (04/07/2012)
Hi Lisanty,
There are very many different types of core materials that you can use in a composite laminate ('sandwich' composites), we stock some of the more popular or easy to use core materials and so given the wide range available I'll only summerise the ones we stock.
The idea of all core materials is to increase the thickness of a panel without increasing its weight, cost or layup time (depending on the core material and the production priorities) as much as solid reinforcement would. Because in a panel under load it's really the innermost and outermost skins that do the majority of the work and because increasing the thickness of a panel increases its stiffness significantly, low density core materials can be very effective in creating stiff, light panels.
Thank you Matt, I was just looking for this explanation!
Alessandro
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MNM
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Thank you very much, Matt! You are the best!
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Matt (Staff)
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Hi MNM, I've created and uploaded a TDS with full mechanical information for the Aluminium Honeycomb to the product pages on the website. Here's a direct link to the Aluminium Honeycomb Technical Datasheet. I hope this helps! Matt
Matt StathamEasy Composites / Carbon Mods - Technical Sales
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MNM
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Matt (Staff) (28/12/2012)
Hi,
At the moment we don't have a combined datasheet for all of our different core materials. One reason is that some of the core materials are quite different from others and would rarely need to be compared directly with eachother. If you need specific data for any core material then just let me know what you need and I'll link to it from here or even add/upload it as necessary.
Best regards, MattI was looking for Aluminium Honeycomb (3.2mm, 6.4mm and 19.1mm) and also for Closed Cell PVC Foam of 80kg/m3 density that you have. Thank you very much for your quick answer!
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Matt (Staff)
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Hi,
At the moment we don't have a combined datasheet for all of our different core materials. One reason is that some of the core materials are quite different from others and would rarely need to be compared directly with eachother. If you need specific data for any core material then just let me know what you need and I'll link to it from here or even add/upload it as necessary.
Best regards, Matt
Matt Statham
Easy Composites / Carbon Mods - Technical Sales
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MNM
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Group: Forum Members
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Hello guyz!
Where can I find a full datasheet for all easycomposites' core materials? I am trying to solve some equations, and I really need some of the mechanical properties..
Sorry for posting here, thought this is a 'noob' question.
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Lisanty
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Matt! thank you soooo much for this information! i really appreciate the work that you guys have being doing. once again cheers 
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