Laminate Sample #33: Vacuum Bagged Mahogany Veneer with Balsa Core

Тәжірибелік нұсқаулар және стиль

This laminate sample is about two very different woods working together to make a panel that is stiff and light. The mahogany veneer is strong and thin and the end-grain balsa is light and has very good compression and shear properties. It's like the perfect team!
For an adhesive, this Proset M1005/2005 shear-thinned epoxy adhesive provides good gap filling and adhesion while being able to flow under bag pressure to bleed off excess resin. The epoxy is a gel-like consistency in the cup, but once it is spread thin and compressed it flows like a laminating resin. Check out how well the bottom surface is wet out.
The process isn't elegant - and the veneers are a mess - but this should give a good idea of what is possible when wood structures are optimized for stiffness at a minimum weight. Other cores can work too - foams, honeycombs, etc. Balsa is nice though because... its wood!
The datasheet for the M1005/2005 Proset is here:
www.prosetepoxy.com/wp-conten...
For more information on practical composites, check out the EC! site:
explorecomposites.com/

Пікірлер: 13

  • @Tarbard
    @Tarbard2 жыл бұрын

    Wood IS awesome. Thanks for these videos

  • @drankenkorps
    @drankenkorps10 ай бұрын

    I would love to see wood on pet core or foam! Good work!

  • @ExploreComposites

    @ExploreComposites

    10 ай бұрын

    Yes! PET foam seems like a great core for wood skins. Light, tough, cheap and recycled! Looking forward to testing this…

  • @drankenkorps

    @drankenkorps

    10 ай бұрын

    @ExploreComposites hei..thank you for replay!... hard to find where to buy... especially in eu.. I would love to see thick furnir on souch core.. first to he stronger second for refurbeshing..

  • @garthlee8166
    @garthlee81663 жыл бұрын

    many thanks really good options not thought of

  • @rshawiii
    @rshawiii3 жыл бұрын

    I'd also like your input on the idea of laminating in decorative wood bling in on the A side of a molded carbon/core/carbon part. In my case this would be for my small deck sections in small table top molds a little bigger than your panel table. Goal would be to have a part that would require little after demolding work other than a clear coat of a UV protective paint, but have that nice deep glossy look over the wood against the carbon background. Would you use a 'gel' layer of a wood laminating resin, any surfacing veils,or satin glass over (under ?) the wood, what would be considerations of vac bagging vs infusing this. Thanks again for these videos and happy new year.

  • @ExploreComposites

    @ExploreComposites

    3 жыл бұрын

    You could probably have decent results with a bunch of different approaches. It gets more complicated with compound curves where the wood has to be tortured into shape. A ply of glass "under" the wood against the mold face might work and would probably be relatively invisible - like those cedar strip kayaks. This could be infused or wet-bagged with the rest of the laminate - infusion probably better results. Thin veneers are porous enough to let resin through to a degree but it might be worth poking small holes or laying the wood in in strips if you're working with a wide area.

  • @saugod
    @saugod3 жыл бұрын

    Happy New Year mate, hope your holiday season went well. This Laminate sample was quite unusual and I learnt something new. I was wondering if putting one or two layers of wood veneers is possible over carbon fiber to make car interior pieces like dash board and handles. Also I was wondering if laminating thin veneers of wood like the ones you've used here can be used to make kayaks or small boats, like laminating layers in different direction of the wood grain to build upto a certain thickness, (maybe reinforce in the middle with some core material or kevlar/ carbon fiber or fiberglass the outside layers). Please let me know if its a practical idea since boats made using cold molding technique use thin planks of wood around 3mm thickness, thus requiring to use steam bending and nails. But I was thinking of using thin veneers with vacuum bagging over a mold (like how eames chair were made). Thank you for sharing this video with us.

  • @ExploreComposites

    @ExploreComposites

    3 жыл бұрын

    There is a ton of good information on the use of wood veneer laminates for boatbuilding - with cores and without. The method is just like a huge Eames chair but usually the mold is just a framework with temporary stringers to support the veneers. People often use staples (plastic Raptor ones are great) or vacuum bags (after the initial layers) to clamp the veneers. The issue with applying wood over curved stuff is that it doesn't conform to compound curves very well unless you cut it into small enough bits. You end up with lots of seams. Fiberglass or carbon plies usually go on the outside more as a sealing and finish substrate though they can be used structurally in place of additional plies of veneer. There's a great book on laminated wood construction by the Gougeon Brothers of WEST System epoxy... downloadable as a PDF here: www.westsystem.com/the-gougeon-brothers-on-boat-construction/ For complicated geometry like a car dash, it might be easier to apply it over cured composite using traditional veneer techniques like a furniture maker. Or use machined "chunks" of wood made on a CNC...? I'm only a rough carpenter so this is out of my league!

  • @saugod

    @saugod

    3 жыл бұрын

    @@ExploreComposites Thank you for guiding me towards the correct path. Your videos provide with a ton of information regards composites, glad I found your channel.

  • @sheanyquist
    @sheanyquist3 жыл бұрын

    I've been binge watching all of your videos. Absolutely awesome stuff. I've learned a ton. I'm trying to learn different carbon fiber techniques for a project I have on youtube. I would love for you to check it out tell what you think.

  • @ExploreComposites

    @ExploreComposites

    3 жыл бұрын

    That is an awesome project! I'm not sure how structural the shell/fairing needs to be but I have some experience with stuff like that and might have ideas on how to make it easier / cheaper. Have you seen my Hyperloop shell videos from about a year ago? It's smaller and lighter but a similar application. If you want to discuss, send me a note at chris@explorecomposites.com - happy to help any way I can!

  • @sheanyquist

    @sheanyquist

    3 жыл бұрын

    @@ExploreComposites thanks so rad. I'll hit you up tonight!

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