Wood core secrets...

OAC · Post by **OAC** » Mon Mar 21, 2011 11:45 am

... This one was new to me (I will maybe try it...some day):
http://www.youtube.com/watch?v=CiQ1liPf ... sponse_rev

My next build, the "glueing machine" in this clip:
http://www.youtube.com/watch?v=HPtzJR9Dils&NR=1

Brazen · Post by **Brazen** » Mon Mar 21, 2011 12:15 pm

Very interesting. I like their take on tip/mold conformance...radius pieces at the tips. Thanks OAC )

Richuk · Post by **Richuk** » Mon Mar 21, 2011 3:17 pm

I'll be watchin that second video again!

Great find OAC

skidesmond · Post by **skidesmond** » Mon Mar 21, 2011 5:22 pm

I think there are some folks in the forum that have made cores like that (the side cut part) but not using that method. I think I saw an Elan video that made cores in that fashion.

I'm working on a jig to make side cut cores where the center will be shaped and then additional wood strips will be glue on to the sides.

Not crazy about how Nordica used a staple gun to attach the wood core strips back together.

Brazen · Post by **Brazen** » Mon Mar 21, 2011 5:26 pm

I know, that creeped me out when I saw it. But...if the core's wet out properly it may actually be better strength-wise. I have a sense that the poly glue offers more flexibility to the structure in the final analysis, while allowing epoxy to fill the core is probably heavier and more unwieldy, and the bond is simply not as good since the clamp pressure VS staples and rough adherence to a mold shape is, imo, a superior way to go. That part is "process speed".

skidesmond · Post by **skidesmond** » Mon Mar 21, 2011 5:47 pm

Yeah I figured the reason was for process speed. They must know what they are doing since they do it for a living and I don't. I don't have the controls/machinery/$$ to get away with that kind of shortcut. I do like the idea of shaping the core and will be doing it in the future once my jig is made.

OAC · Post by **OAC** » Mon Mar 21, 2011 10:09 pm

Another jig to build...

I may try it in my MK II (OAC Next generation) builds.
I think the matrix, mold and pressure will do the job. As SD put it "they do it for a living". So no worries. I remember us discussing the Dynastar "finger joint core" some season ago. And they also doing it for a living.

feldybikes · Post by **feldybikes** » Mon Apr 04, 2011 7:09 pm

Those were two cool videos. Thanks!

Anyone notice how in the layout one they put down VDS, then the FG binding reinforcement, then titanal? Why wouldn't the VDS be next to the titanal? Or was I interpreting that incorrectly?

KevyWevy · Post by **KevyWevy** » Mon Apr 04, 2011 8:15 pm

nice!

I like the resin roller application methods in the second video

sir.orange · Post by **sir.orange** » Mon Aug 22, 2011 12:14 pm

in the second vid, is it really a resin roller?
i think its just an adhesive that prevents the layup from slipping and the fabrics are prepregs...they look very shiny. am i right?
i can t believe the roller wets out properly anything

MontuckyMadman · Post by **MontuckyMadman** » Mon Aug 22, 2011 12:18 pm

the fabrics also looks very stiff like a prepreg, maybe.

Richuk · Post by **Richuk** » Mon Aug 22, 2011 12:41 pm

I'd have my money on them being pre-cured sections of glass.

skidesmond · Post by **skidesmond** » Mon Aug 22, 2011 3:53 pm

sir.orange wrote:in the second vid, is it really a resin roller?
i think its just an adhesive that prevents the layup from slipping and the fabrics are prepregs...they look very shiny. am i right?
i can t believe the roller wets out properly anything

Wouldn't the resin eventually kick in on the rollers? Who'd clean up that mess.

Richuk · Post by **Richuk** » Tue Aug 23, 2011 7:55 am

Not sure SD - I would assume they have balanced that cost against the production savings, quality etc. Thought they would be polyprop, but they appear to run their edge through too???

Ski Builders Forum

Ski Builders Forum

Wood core secrets...

Wood core secrets...