Search found 1287 matches

by chrismp
Tue Dec 10, 2019 12:40 am
Forum: Ski/Snowboard Design and Layup
Topic: Snow Surf - Ptex to full wood core
Replies: 2
Views: 41

Re: Snow Surf - Ptex to full wood core

I would bend the wood first and add the base in a second step with a vacuum press as this gets you uniform pressure all over the area of the board, which not easy to achieve without a pneumatic or vacuum press. You don't necessarily need a proper vacuum pump for this (although it draws a higher vacu...
by chrismp
Mon Nov 25, 2019 10:30 am
Forum: Ski/Snowboard Design and Layup
Topic: UD Carbon strings on a carrier foil
Replies: 2
Views: 134

Re: UD Carbon strings on a carrier foil

This stuff is often called "fused carbon". Here is an Australian shop (with reasonable worldwide shipping on smaller items) that carries a variety of tapes: https://shapers.com.au/non-woven-tapes/ ... ing&page=1
by chrismp
Thu Nov 21, 2019 8:58 am
Forum: Ski/Snowboard Design and Layup
Topic: How to avoid unevenness of the base between the edges
Replies: 8
Views: 296

Re: How to avoid unevenness of the base between the edges

What mammuth said. Everything you're asking has been discussed on here before.

Putting the veneer underneath the glass will make it easier to place, but it will make the ski less stiff as the distance between the reinforcements is decreased.
by chrismp
Wed Nov 20, 2019 12:56 am
Forum: Ski/Snowboard Design and Layup
Topic: How to avoid unevenness of the base between the edges
Replies: 8
Views: 296

Re: How to avoid unevenness of the base between the edges

The picture you posted is exactly what most people do. Search the forum and you will find a few solutions on how to position the core exactly in relation to the base (for skis I usually drill two holes in the core and superglue short dowels to the base that go into the holes in the core). The method...
by chrismp
Fri Nov 15, 2019 6:08 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Newbie needs some guidance
Replies: 4
Views: 219

Re: Newbie needs some guidance

Have a look at this video: https://www.youtube.com/watch?v=rucnWG8mWv4&list=PL34695342B698FC80&index=3&t=0s Many of the tools and techniques you see in there are a cheap and easy way to build a ski/snowboard. If you use proper materials for skis (base, edges, etc), then you should be able to make a ...
by chrismp
Thu Nov 14, 2019 3:22 am
Forum: Ski/Snowboard Design and Layup
Topic: How to avoid unevenness of the base between the edges
Replies: 8
Views: 296

Re: How to avoid unevenness of the base between the edges

Are you milling a notch on the core? That is exactly what most people do. If you search the forum for "rabbet" (the term for such notch), you will find some more info. Another option is to use some filler fitted between the edges that is the exact height of the edge Tangs. I think someone on here h...
by chrismp
Sun Oct 20, 2019 11:35 pm
Forum: Ski/Snowboard Design and Layup
Topic: Skitour project
Replies: 1
Views: 273

Re: Skitour project

I can't help you with the dimensions, but for skibuilding supplies in Europe, check out www.skibaumarkt.de/en
by chrismp
Tue Oct 08, 2019 11:52 pm
Forum: Ski/Snowboard Design and Layup
Topic: Bamboo/Cork Sidewalls
Replies: 8
Views: 394

Re: Bamboo/Cork Sidewalls

I think they wanted to say "damping".
by chrismp
Mon Oct 07, 2019 11:53 pm
Forum: Ski/Snowboard Design and Layup
Topic: Bamboo/Cork Sidewalls
Replies: 8
Views: 394

Re: Bamboo/Cork Sidewalls

That is most probably not just pure cork, but a mix of rubber and cork. Capita uses this stuff in some of their park boards (Ultrafear model) as well and it holds up fine (a friend of mine rides one with countless park laps on it). We also received some samples of the rubber cork from the manufactur...
by chrismp
Thu Sep 12, 2019 12:57 am
Forum: Ski/Snowboard Design and Layup
Topic: Need help with kid snowboard
Replies: 19
Views: 720

Re: Need help with kid snowboard

In snowboards a biax layup usually refers to 0/90° fibers and not +45/-45°. That way you get a board that has some stiffness mainly along its length but is torsonally soft.
by chrismp
Wed Aug 28, 2019 12:12 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Could you make a pneumatic bladder from scratch?
Replies: 17
Views: 6863

Re: Could you make a pneumatic bladder from scratch?

I don't recall the exact overlap of the fabric. I think it was About 1" to 1.5". Maybe Montucky remembers what he has sewn for me :) For the resin I used Adiprene LF 950A. I wouldn't recommend using that one though as it is a pain to get bubble free without special equipment and the pot life is way ...
by chrismp
Tue Aug 27, 2019 12:22 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Could you make a pneumatic bladder from scratch?
Replies: 17
Views: 6863

Re: Could you make a pneumatic bladder from scratch?

The overlapping box stitches were done by MontuckMadman for me. I simply coated the whole inside of the fabric tube with flexible polyurethane resin and then clamped the open ends shut with iron bars. I can't remember the exact pressure it started leaking, but I think it held up fine up to my usual ...
by chrismp
Fri Jul 19, 2019 5:21 am
Forum: Journals: Log Your Ski Building Progress
Topic: Here we go- Another ski press build thread
Replies: 17
Views: 9566

Re: Here we go- Another ski press build thread

I had one of those fabric sleeve presses with sleeves made by montucky madman (thank you!). Pressing with the sleeves worked very well, but it was a pain to get the sleeves onto the press. Maybe if you cover the press in some low friction plastic material it would work better.