Haha, that right. I forgot. Thanks for the price information anyway. I have memory like a goldfish right now, trying to order all material,doing CAD drawings for the molds and templates, designing the first three ski models and so on. Can´t wait to get started! I see we think alike, regarding the ho...

Hej OAC! Where did you find your silicone sheets and what did you pay? I got some samples the other day from http://www.ulinco.se/UserFiles/Ulinco/www.ulinco.com/Documents/PDF%20Covertech%20SE/separata%20sidor/covertech%200607%2037.pdf (Swedish site) I think they have 0.5-1.5 mm in thickness in stoc...

The other day I got hold of some Paulownia from boardbuildingsupply.eu. I only weighed one board but the density was approx. 300-330 kg/m^3 so it was not as light weight as I expected. Info on Paulownia often states that it is somewhere in the 200-250 kg/m^3 region. I´m looking at end grain balsa to...

I´m interested!
Please do post the Matlab code. Have you verified it against any skis you´ve built?

Been awhile since I used Matlab...

/Johan

\m/ Matlab. Whiskey. Heavy Metal \m/ ;-)

I noticed too that they are talking about heating at 160 degrees Celsius... Must be wrong since from the data sheets i have found ABS and UHMWPE starts to melt around 120 degrees Celcius. I know from first hand experience that if you go above 120 C you skis will most likely look like a grilled chees...

@MontuckyMadman
I suggest you give the money to charity(=buy material to build yourself a cool pair of skis) ;-)

By the way, did you use veneer as top sheet on your skis, or did you have a regular plastic top-sheet on top of the veener? A lot of "top" in that sentance...
/Johan

@Madman
Is the weight per ski or pair? Didn´t find out that in the link. Maybe I missed it...?
@Carlito

I thought your reply was really good and informative. Keep up the good work! Your reply sort of sums up my experience of working with balsa, vacuum and applied heat for curing :-)

/Johan

But, Swedish Spruce="Gran" have a Youngs modulus of up to 16.5 Gpa with a density of ~ 400 kg/m^3... Seriously stiff wood when compared to its weight. Stiffer than UD glass fiber which is about 40 GPa (volume fraction 0.5) with a weight of 1800-2000 kg/m^3. Mother Nature is a clever engine...

@fa It´s going to be cool to try it for skicores. I know a few skibrands use it, but I´m not sure if they use 100% Paulownia or have stringers or mix it up whit other woodtypes. Should be good for holding screws to from what I have heard, and is not as sensitive to water as other wood types. Going t...

Hello, the hollow glass is used by HEAD. From their website: "AIRCOAT Super Light + Super Strong = Super Agile While everybody is trying to make the core of their skis lighter, we decided to put air in the surrounding fiberglass. AIRCOAT means our fibers are hollow, not only making our 08.09 fr...

@K.Ström Ok, so you are a bit away from where I´m located... I have been thinging about usin P-tex for sidewalls too. I´ve never undestood why you would need 1.5 cm if sidewalls. When you get the Paulownia could you report back how the boards look and maybe check the density? I´m going to use Paulow...

@MontuckyMadman What is your idea behind doing a diamond shaped lay-up and not just a full layer or a lengtwise strip of glass to make them stiffer? Is it to increase bending stiffness or torsional stiffness? Do you have any pics to show how it looks? Really like the fact that you are using a lot of...

@Brazen I don´t understand your post, and don´t know if your comment was intended for me. But I´m from Sweden and English is not my native language... I´m genuinely interested in building skis and I know there is a lot of knowledge here on the forum. Being able to discuss different ideas is what I t...

Aha! So your the guy to challenge for the weight watcher title! Could you tell me a little more about the construction and how the ski worked out "riding-wise"? Do you have any tips on losing a little weight without sacrificing performance? Do you feel there are any downsides to lighter sk...

@powderho Dude, You´re no fun. Don´t spoil our vision ;-) Yes, you are correct. According to Goode: "A typical 175cm GOODE ski weighs only 2.1lbs. (950gms)" and then we have http://www.skitrab.com Where the lightest skis are about 750g! These skis may not have the same width but still, it ...