Thanks for Infos guys! I already did ski boards out of this mold, so im quite confident that the boards hold their shape in use. The thickness of the core makes a difference in springback. This was clearly to see for me, thicker core makes less chamber and less rocker. Changes between the boards was...

Thanks Montucky! So generally you can say that glassfibre has more springback then carbon. That was what i assumed On my vacuum setup with my core & layup i got 2.5cm less at tip and 1.5cm less at tail (big rocker front & rear, ash) and 2-4mm less at camber (different core thickness). If i r...

Nobody?

Sure its better to cut up, but how many of us like to cut up nice boards ;) Me it helped a lot to start transparent (with vaac). Could see movements, trapped resin, dry spots, air, thickness of laminate (limited of course)... I would say except point 1 and partly point 2 you can evaluate the others ...

Most of this you can do without cutting if u use transparent topsheet and base

Some of you say that its necessary to overengineer the mold to compensate springback of tip/tail/camber. On the other hand some friends say its not necessary on theirs setup, they build with carbon in a pneumatic press with reasonable heat... !? Maybe they build flat(ter) skis ;) I know it depends o...

Problem i see with 3d base: base prepare ... try to grind a base like that

Ok, but if im not wrong you need different specs for these 2 applications:

Pressing: very flexible, just up to 80 degreeds

Sublim: not so flexible (mostly just flat) but up to 1xx degrees

Do i miss something or do you want to make one for both?

4 Sublim?

175 cm wide roll/ 5 m length, up to 145degrees, releasable for Euro 38,- ... Elongation break 1000%

If youre in EU i would give it a try


Did 2 skis with this material, worked quite well. 26Hg Vacuum, pump started every 20-40 minutes, so it seals good. Not with a frame, but with sticky tape.

If you dont need to go high temp, maybe try this one:

http://shop1.r-g.de/item/390176

Its quite cheap, goes up to 145 degrees and is good stretchable. Till now im happy with it.

Maybe its not as elastic as silicone, you have to compare.

From another thread which i did read recently the best bonding should be with: grind w. 80 clean with isoprohylalcohol flame Was from some testing results Flaming can get destroyed even by rubbing on the same material (rolled material) Like montucky said, flaming is a quick job, so i do it everytime...

Imho Georg from skibaumarkt offers also ready to shape cores

@vinman: Will try to rabbet the abs after profiling next time. Did replace the torn up parts and had to rabbet them again ... this was working without problems. So i see no disadvantage in rabbeting after profiling (maybe my router bit is pushing down good, its one with replaceable hss blades). Next...

First one done.. Small problems due to problem with resin, but quite happy with the result. Next days testing, then next protos. New cores already in work...