Search found 1324 matches

by chrismp
Thu Oct 29, 2020 3:41 am
Forum: Ski/Snowboard Design and Layup
Topic: Camber Issues
Replies: 8
Views: 69

Re: Camber Issues

I just did this test on a few big brand production skis we have lying around in our shop and some of them showed the same behaviour, so I wouldn't worry about this too much. However, I think this comes down to the flex profile of the ski. My guess is that if the cambered part of the ski is rather st...
by chrismp
Mon Oct 26, 2020 11:04 pm
Forum: Ski/Snowboard Design and Layup
Topic: Core splitting
Replies: 1
Views: 33

Re: Core splitting

I would try to get some glue into the crack and clamp it back together.
by chrismp
Wed Oct 14, 2020 11:13 pm
Forum: Materials and Supplies
Topic: Nazdar epoxy inks in Europe?
Replies: 8
Views: 1976

Re: Nazdar epoxy inks in Europe?

I don't see the problem...with the right epoxy pigments you can mix pretty much any color with the white base ink.
by chrismp
Wed Oct 14, 2020 1:23 am
Forum: Ski/Snowboard Design and Layup
Topic: traditional flex scale (1-10) translated
Replies: 4
Views: 120

Re: traditional flex scale (1-10) translated

For a splitboard my guess would be that your numbers are on the softer side of medium (the calculator does not account for the board being split, but splitting the board makes it significantly softer). As for the flex scales used by different brands, those are not really a standardized indicator. Ge...
by chrismp
Wed Oct 14, 2020 1:13 am
Forum: Journals: Log Your Ski Building Progress
Topic: First Build!!
Replies: 4
Views: 128

Re: First Build!!

Great that your board came out flat! It's definitely a good idea to keep checking it for each board though. Pressing a board is a lot of stress on all materials involved. As for the inserts, I only add that many if the board is supposed to be ridden by a number of differnt people or if I am not sure...
by chrismp
Mon Oct 12, 2020 11:50 pm
Forum: Journals: Log Your Ski Building Progress
Topic: First Build!!
Replies: 4
Views: 128

Re: First Build!!

Great result for your first board! Nevermind the vacuum, if you can build a pneumatic press right away. I like your press design! Have you checked if your base came out flat? If not, I would add a couple more of those cross braces. I noticed you added a lot of inserts. My philospohy for boards I bui...
by chrismp
Wed Oct 07, 2020 11:43 pm
Forum: Ski/Snowboard Design and Layup
Topic: Splitboard "tounge and groove" concept
Replies: 11
Views: 187

Re: Splitboard "tounge and groove" concept

On that topic my friend said that she rarely has to use the scraper tool provided and that the halves go together pretty much like any other splitboard.
by chrismp
Wed Oct 07, 2020 11:41 pm
Forum: Ski/Snowboard Design and Layup
Topic: Which fiber is best at retaining screws
Replies: 5
Views: 132

Re: Which fiber is best at retaining screws

Unfortunately I have no data on the pull-out strength of those fibers. I think flax could work well too as the laminate usually stays relatively thick in a layup which would give the screws more material to bite into. Other than those fibers the ski industry often uses titanal plates to reinforce th...
by chrismp
Wed Oct 07, 2020 5:06 am
Forum: Ski/Snowboard Design and Layup
Topic: Splitboard "tounge and groove" concept
Replies: 11
Views: 187

Re: Splitboard "tounge and groove" concept

As for this tech being a meaningful addition to splitboards or just marketing, a friend of mine rides one of those Furberg splits (after riding Jones for a long time) and swears by it - in particular for hitting backcountry jumps.
by chrismp
Sun Oct 04, 2020 2:34 am
Forum: Ski/Snowboard Design and Layup
Topic: Splitboard "tounge and groove" concept
Replies: 11
Views: 187

Re: Splitboard "tounge and groove" concept

I am thinking about doing the same. My initial idea was to make the tongue out of a thicker sheet of composite (probably carbon fiber), however I am concerned that the carbon fiber will get too beat up during skinning with the risk of not being able to assemble the board for the downhill. Do you hav...
by chrismp
Thu Oct 01, 2020 11:33 pm
Forum: Ski/Snowboard Design and Layup
Topic: Sublimation warping
Replies: 2
Views: 88

Re: Sublimation warping

Some waviness is to be expected especially with base material. The only way to mitigate this is to cool the material under pressure. Many snowboard companies just clamp the base material between two thick metal sheets to cool them flat. The pressure for sublimation sounds really high! I sublimate at...
by chrismp
Tue Sep 29, 2020 1:35 am
Forum: Ski/Snowboard Design and Layup
Topic: Design Software for Mac
Replies: 5
Views: 170

Re: Design Software for Mac

You can try running a virtual machine with windows to run Windows specific software. Other than that there is native CAD-software for Mac too. A friend of mine uses Rhino for Mac to design skis.
by chrismp
Wed Sep 16, 2020 11:18 pm
Forum: Ski/Snowboard Design and Layup
Topic: Skis... with a TWIST!
Replies: 6
Views: 358

Re: Skis... with a TWIST!

I would definitely ride them. You'd be amazed how many similar defects are in retail skis/boards and they are still sold in stores.

Even if you can feel the twist in one ski, your skiing will probably adapt to it pretty quickly.
by chrismp
Thu Sep 03, 2020 5:34 am
Forum: Ski/Snowboard Design and Layup
Topic: Honeycomb core/Prepreg Film
Replies: 11
Views: 394

Re: Honeycomb core/Prepreg Film

You could also use pre-cured fiberglass or carbon sheets. These could easily be made by just vacuum bagging or pressing single or mulitple layers of cloth on their own. If you want to save weight, you could make a pre-cured sheet thin fiberglass veil and use that as a separating layer. For better bo...