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Lightweight or ultra lightweight? Honeycomb!

PostPosted: Tue Jan 30, 2007 8:05 pm
by Lesbest
I've seen a thread about an ultralight build and have seen ideas for wood, laminated wood, aluminum, and all combinations of the same but I don't think I've seen anyone mention honeycomb.

You can build airplanes, high perfofmance boats, etc, from this and I wondered if anyone has tried it?

Thomas.net.com has a big section of companies manufacturing honeycomb products.

Wadya think? Les

Technical!

PostPosted: Tue Jan 30, 2007 8:46 pm
by Lesbest
If you are going to be technical you have to be technically correct.

The address is ThomasNet.com and then search honeycomb panels.

How do we make this an active link?

Les

PostPosted: Tue Jan 30, 2007 9:00 pm
by Miriam C.
Les you can make an active link different ways. I find the easiest is to go to the site and copy the URL address, then copy it into the post.

The other way is to type http://www.ThomasNet.com

PostPosted: Tue Jan 30, 2007 9:29 pm
by glassice
How do you keep the honeycomb. from felling up with glue ? Have you look at the cost :cry: when we use it we use preinpraged (resin and glass in one sheet it has to be kept at 36 deg to 40 cold and then vacuum bag and heated ) not a back Yard deal

PostPosted: Tue Jan 30, 2007 10:20 pm
by halfdome, Danny
glassice wrote:How do you keep the honeycomb. from felling up with glue and have you look at the cost :cry: when we use it we use pre prag not a back Yard deal

¿Dice qué?

PostPosted: Tue Jan 30, 2007 10:22 pm
by Jiminsav
Honeycomb is expensive, you have to cover the edges with something when you cut it to shape, and you have to have a way to bond it together.
epoxy and glue are nice, but they don't have the longevity of mechanical fasteners, and i'm not sure I want to see my teardrop come apart at 70 MPH.

and did I mention it's expensive?

PostPosted: Wed Jan 31, 2007 12:50 am
by asianflava
glassice wrote:How do you keep the honeycomb. from felling up with glue and have you look at the cost :cry: when we use it we use pre prag not a back Yard deal


Translation:
How do you keep the honeycomb from filling up with glue? You also have to look at the cost. When we use it, we use pre-preg which is not something that is practical to do at home.

I actually understood this one. I've made some honeycomb nomex panels with kevlar prepreg. We glued the prepreg faces to the honeycomb with epoxy thickened with microballons. It did fillin some of the honeycomb cells but it wasn't that bad.

Prepreg are essentially sheets of fabric that has been "pre-impregnated" with epoxy. These sheets have to be kept in cold storage and heat cured in an autoclave or vacuum bag.

PS: Oh I see now that glassice has edited his post....Yup, what he said. Plus you still have the problems of closing out the edges and not having a stringer for the bukheads to screw into.

honeycomb

PostPosted: Wed Jan 31, 2007 2:55 am
by glassice
If you want to try a small job . 55 Gal trash bag, shop vacuum(watch for heat in the motor ) plumbers Putty what you use on a sink,heat lamps .I have heard of using a heat pad.You do not have use prepreg .look at my post How I built a fiberglass tear. Side wall use HC. instead of the foam slide in to bag seal edge and hose with putty (It need to be very fresh and tacky) You need to do as top then all over again as bottom helps HC not fell with glue are resin .shop vacuum watch for heat in the shop vacuum watch for heat in the motor! can closing out the edges with resin thickened with microballons. . Bond a flange for bulkheads are cabinets make sure it fit in bag before starting and do a dry run first no resin.shop vacuum watch for heat in the motor small leak after bag help it run cooler! Side next to mold will be smooth AFTER CURE BEWARED EXTRA RESIN WILL CUT LIKE A RAZOR!!!!!!!!

Re: Lightweight or ultra lightweight? Honeycomb!

PostPosted: Wed Jan 31, 2007 4:23 am
by Classic Finn
Lesbest wrote:I've seen a thread about an ultralight build and have seen ideas for wood, laminated wood, aluminum, and all combinations of the same but I don't think I've seen anyone mention honeycomb.

You can build airplanes, high perfofmance boats, etc, from this and I wondered if anyone has tried it?

Thomas.net.com has a big section of companies manufacturing honeycomb products.

Wadya think? Les


Hello there.. I just thought to stop in and mention that there is a thread I started with the Honey Comb or Mono Pan in General.. The Heading or title is Can this be used in Teardrop Construction... Check out the Websites..

http://tnttt.com/viewtopic.php?t=13757

Im checking into it at present even though Im across the atlantic in Finland..

Best regards
Classic Finn ;)

Re: Technical!

PostPosted: Fri Feb 02, 2007 7:59 pm
by brian_bp
Lesbest wrote:...How do we make this an active link?...


Anthing you put in your post which is a complete and valid address works as a live link. That means it needs the "http://" in front.

If you position the mouse pointer over any of the editing buttons above, a hint appears to show you the code which that button is intended to produce. They say that "live" links have "url" start and end tags in square brackets around them.

The simplest method:
    1. copy the URL from wherever you have it (e.g. http://www.mikenchell.com)
    2. type or paste it into your message, so you have something like
    Code: Select all
    http://www.mikenchell.com

    3. highlight the text to be displayed and click the "URL" button above the editing box, which adds tags like this
    Code: Select all
    [url]http://www.mikenchell.com[/url]

That gives you this result:
http://www.mikenchell.com

Here's what I do, to make links the way they are normally done on web pages:
    1. copy the URL from wherever you have it (e.g. http://www.mikenchell.com)
    2. type whatever you want to display into your message so you've got something like
    Code: Select all
    Great Site

    3. highlight the text to be displayed and click the "URL" button above the editing box, which adds tags like this
    Code: Select all
    [url]Great Site[/url]

    4. after the "url" in the first tag, add an equals sign and paste in that URL you copied earlier, so you have something like
    Code: Select all
    [url=http://www.mikenchell.com]Great Site[/url]



That gives you this result:
Great Site