Havent done that yet but i will and come back to you.
As it is quite a wide ski i dont think there will be much issue with torsional strength. Watch this space

Definitely a thinner core. We monitor the deflection of our cores at profile stage.
The stringers that had carbon through them produced a thinner lighter core achieving the same deflection as other heavier/thicker cores.

We just finished a pair using Paulownia with some carbon between the stringers and bamboo sidewalls. 19oz fg above and below with a carbon uni strip on top. 184cm long 140 110 130 and only 1800grams per ski. Definitely not noodles as well. Seemed to be some advantage to having the carbon between the...

Anyone tried ski wax on their bases first?

We use a 3kg block placed at the boot position to measure the stiffness of the cores. Each end is placed on blocks and the resulting deflection is measured and recorded. Both cores can be placed side by side to ensure that they have the same flex pattern. You can use this method to define how stiff ...

I cut through my mould from the bottom half way up. About 200mm back from the end of the running length I then cut some .7mm aluminium sheets same width as the mould and in increasing lengths, shimming up to 7mm, ie 70mm, 140mm 210mm 280mm etc Placed this under the mould. Pressure comes on forcing t...

No Blanket
We have a heater under our press and achieve about 45 celsius (110 F)
for about 15 hours
With the aluminium box section cassette above the materials and a mass of timber below i suspect the transfer of heat is predominantly from above

We have mainly gone with Carbonfibre as the last layer before the topsheet.
Test show this results in achieving the most camber compared to assymetric layups
We can also confirm that in colder temps (on the snow ) the camber is a little more positive than when warm

Bamboo is quite heavy (785kg/m3) probably due to all the glue holding it together. To have only achieved a saving of 180grams per ski makes me think that the foam cores absorbed a lot of epoxy in the lay up. We have changed from bamboo to a Pacific Kauri (540kg/m3) , achieved the same deflection pro...

And Balsa will be soft therefor absorb more epoxy reducing the desired effect

we have been using a 50mm stringer of 470grm unidirectional carbon as the last before the topsheet the full length of the ski.
seem to have best results with that

We have been using a furniture wax on MDF and only with our first light coloured bases have i found out how deep the wax has been penetrating into the base with heat and pressure. I estimate that it was 0.1 m into the base.
Should be using a soft ski wax.

If you profile with a router to all but the first and last 20mm of sidewall the remaining sidewall will provide all the integrity needed to stop sidewalls becoming detatched. Of course this means a full width tip and tail spacer.

I did a search and found this. "In identical lay-ups, with identical fibres, in an identical matrix, GRP is inferior to CRP in weight, toughness, elasticity, tensile and shear strength. The only thing GRP is better at is cost, or weight if you are looking for ballast. Take it from a Materials E...

Wondering if anyone has built a ski using only carbon fibre. Is fibreglass imperetive or is it just an economic reason that glass is used over carbon?