Honeycomb core for infusion?

[jim lee]

My prepreg friends are always laughing because they can use extremely light honeycomb core and, seeing we do infusion, we can't.

With infusion we're limited by the crush strength of our solid foam cores. It seems that with honeycomb you get the crush strength without the weight because most of your core is air.

Then the thought hit me, if someone made a composite core.. A honeycomb with the cells filled with an extremely light foam. The foam could be very light because the honeycomb would supply the crush strength. The foam only has to fill the space in between to keep out the extra resin.

Anyone make something like this?

-jim lee

[DGreenwood]

Yup it has been done...I don't know if it is still manufactured though?

[michael pierzga]

Sounds difficult to me. How would you bond to the honeycomb cells ? The foam filler would have no bond value

[tunnels]

Originally Posted by jim lee

My prepreg friends are always laughing because they can use extremely light honeycomb core and, seeing we do infusion, we can't.

With infusion we're limited by the crush strength of our solid foam cores. It seems that with honeycomb you get the crush strength without the weight because most of your core is air.

Then the thought hit me, if someone made a composite core.. A honeycomb with the cells filled with an extremely light foam. The foam could be very light because the honeycomb would supply the crush strength. The foam only has to fill the space in between to keep out the extra resin.

Anyone make something like this?

-jim lee

Your a bit slow out of the blocks old son been done for long time Check out NIDA CORE Is the first to spring to mind but i am sure there are others .

[DGreenwood]

http://nida-core.com/portuguese/nidaprod_honey_foam.htm

Try this

[tunnels]

Originally Posted by DGreenwood

http://nida-core.com/portuguese/nidaprod_honey_foam.htm

Try this

see started alread and will be others as well !!

[groper]

this is what your after -- > http://www.3d-core.com/en/index.html

After you infuse it, the resin becomes the honeycomb...

[jim lee]

I don't think I want the resin to be the honeycomb..

The idea was that if you had a good strong honeycomb, you could save the weight of the foam because it would then be just a filler. It didn't need to do anything. The nida core stuff uses the same weight foam filer as the core I use now so its no weight savings.

-jim lee


-jim lee

[Herman]

Till so far I do not know of any succesful foam filled honeycombs. They do exist, but mainly for static purposes, such as dormer roofs (the foam prevents condensation in the honeycomb).

If you want bragging rights, make your friends a panel with Core-cell, nicely infused, or just regular PVC foam, and a panel in honeycomb with the same skins. Give your friends a hammer, and tell them to destroy the panels.

Honeycomb is not that good at impact, that is why they beef up the panel and use expensive material in the skin.

At this moment stick to what you are doing: build high-quality, durable boats, and find a market for that.

[jim lee]

Well you know.. It was just a thought.

-jim lee

[Herman]

Go to bed, boy. It must be in the middle of the night in your place!