Getting started!

[Brazen]

<hums the theme from Jaws>

[falls]

First pair in the oven!

Heat brings new noise from the press!

Richuk, if you read this can you let me know if the sicomin will cure on the table overnight to clean up easier? Or does it stay liquid without heat. Thanks

[chrismp]

if its the sr8500/sz8525 combo you're using it does cure without heat if i remember correctly. don't recall how long it takes though.

[falls]

Thats what I'm using. Thanks.

[falls]

Seem to have baked well
The resin on tables did harden overnight for cleanup.
Sicomin epoxy 8500/8525 hardener I think (the ski specific one anyway).
I raised temp to 80C (176F) over 30 minutes steady rate. Then soaked at 80 for 75 minutes (was planning 60 min, but was worried with one blanket that the heat hadn't permeated all the way through). One blanket on the top.
Cut heat at 11pm and allowed to cool overnight under pressure. Pressed at 60psi in the airbags.
Could feel the epoxy was hardening by poking it from the side of the layup.
This is a longer pair of similar design to my others. 145 tip set back for early taper, 115 mid, 125 tail (pin tail).
2cm over 25cm tip rocker, long curve tail rise (650mm) radius. Side cut is 22m I think. Flat camber 1250mm running length. Sidecut extends 4cm into the rocker at each end. True 186cm length.

Will wait 2 days then cut out, sand, bevel and hopefully get a base grind before heading to japan on Friday. A lot to do in a week!

[MontuckyMadman]

awesome. envious. working on it...

[Richuk]

Next day is OK, if you have the time. Looking good Falls!

[vinman]

I love the mutant turtle. can't wait to see the finished product

[chrismp]

turtles skis! awesome!
any significant camber/rocker changes yet?

[falls]

They seem to be holding shape.
Will cut them out today. Will be interesting to see how the top heat alone has affected the profile.
I wasn't quite sure whether I should pull them out when still warm or let them cool under pressure. Peoples opinion is perhaps divided on this?

[vinman]

my gut says let them cool under pressure unless you have a camber rack to keep them bent in the desired profile. But since I have not built anything yet I can only speculate.

[falls]

That's what I figured. I have read other theories too though that leaving them in the press brings uneven cooling and therefore can have some funky effects. They do seem pretty flat out of the press.

I read in the article on here where the QCM guy answers questions - he recounts what Morrow snowboards did. They cure for 19 minutes then took the board out and put it in a camber - actually he said it better

Q5: When a ski loses camber, is it the epoxy bonds breaking down or the fiberglass reinforcements breaking that causes this?

My belief is that the epoxy in the board has still not fully cured for camber to go South. Take Morrow for example they cured for 18 minutes at 180 deg F. The epoxy is 95% cured at this stage. Partly because warm epoxy can move somewhat freely, they then put their boards into a Post-Camber press for an additional 24 hours. Mr. Camber was saved. Even with a full cure at elevated temp, like above, the epoxy is still curing for the next 7 days. 95% to 96% to 97%, etc. All Epoxy companies do their data sheets based on a 7 day 70 degree F cure – to optimize results.

[falls]

[MontuckyMadman]

Peel it.

[sammer]

Peel it.

What he said

sam