Search found 103 matches

by PTTR
Mon Jan 28, 2013 1:27 am
Forum: Ski/Snowboard Design and Layup
Topic: Ultralight MDF possible core material?
Replies: 13
Views: 8218

I do not think it is a good idea. There is a big difference in density from surface to inside of the MDF. inside it's like a sponge. I think you would have to seal the cores after profiling with something fast drying, waterbased floor lacquer for example, to avoid that the cores suck up all the epox...
by PTTR
Sun Jan 27, 2013 1:26 pm
Forum: Ski/Snowboard Design and Layup
Topic: Asymetry?
Replies: 17
Views: 13567

In my opinion it is a little bit more complicated. The skiis don't turn like that. They turn depending on the amount of pressure/flex/sidecut/grip in the snow. Most people have a harder time putting pressure on the upper edge, specially telemarkers. A shorter radius could compensate for that. 0.5 me...
by PTTR
Fri Jan 18, 2013 2:16 pm
Forum: Ski/Snowboard Design and Layup
Topic: Core gluing- potential issues?
Replies: 12
Views: 6503

Sorry to hijack this thread.,,but ..

I have been searching the internet for info about polyurethane varnish and my conclusion was until seconds ago that two componet PUs were too hard and would crack?
If you don't mind sharing, what type of PU are you using Chris?
by PTTR
Fri Jan 18, 2013 2:02 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Figment Original taking shape!
Replies: 85
Views: 54483

Yep.
by PTTR
Mon Jan 14, 2013 12:58 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Figment Original taking shape!
Replies: 85
Views: 54483

I have tried different methods for shimming and I think 1mm cardboard is the easiest to work with. It's easy to cut and has a uniform density. It compresses about 20% so if I want 4 mm of camber I buildt it out of 5 pieces. It's a bit hard to see in the picture but I couldn't find another. The MDF o...
by PTTR
Mon Jan 14, 2013 12:01 pm
Forum: Ski/Snowboard Design and Layup
Topic: how to darken laser recesses?
Replies: 11
Views: 6578

Put on a thin layer of laquer, carve it, color it and sand or scrape the laquer of. Thats how you do it in traditional woodcarving.

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by PTTR
Sun Jan 13, 2013 3:21 pm
Forum: Aprés Ski Building
Topic: Andreas Fransson: Tempting Fear Video
Replies: 4
Views: 4011

ooohh

I read a book many years ago called mountains of the mind by Robert Macfarlane.
This film reminded me of that. He tries to explain the reason for climbing mountains and putting yourself in danger. Very well written as I remember it.
by PTTR
Sun Jan 13, 2013 2:22 pm
Forum: Ski/Snowboard Design and Layup
Topic: Where to put my waist.
Replies: 21
Views: 10326

I'm always one to see experiments. Probably work best in powder. Seems to me you'd have a very long front part of the ski to control with a very short tail. If you get in the back seat at all there won't be much to help you back up, except strong legs and abdomen. I think on a groomed carving trail...
by PTTR
Wed Jan 09, 2013 3:47 pm
Forum: Materials and Supplies
Topic: Problem with Entropy SS CPM
Replies: 23
Views: 15910

I've had the same problem with entropy.
The alternative I was told was to do a dipping heat schedule hot/cool/hot with entropy, which I wasn't able to try.
Do you know how fast and to what temperatures?
by PTTR
Wed Jan 09, 2013 3:04 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Hot box
Replies: 36
Views: 21415

Hmm I havnt been postcuring my skis earlier but for the latest two builds I ve done kind of a postcure outside the press. To speed up the curing process of a topp coat of epoxy I put the skis in my sauna (dry sauna) and heated it to the same temperatur that I use for pressing, around 80 C. Both pair...
by PTTR
Tue Nov 06, 2012 12:06 am
Forum: Ski/Snowboard Design and Layup
Topic: Where to put my waist.
Replies: 21
Views: 10326

I have always been backmounting my bindings quite far with the idea that I wanted to "push" my skiis into the turn. It works for me but I am more and more thinking that it has to do with core profile/style of skiing than sidecut waist placement. I know most skiis have this 55% devision but...
by PTTR
Sun Oct 28, 2012 2:35 pm
Forum: Ski/Snowboard Design and Layup
Topic: Embrace the strange
Replies: 46
Views: 37461

http://www.snowboardermag.com/videos/sp ... nowboards/

The head is still spinniing and winter is comming. Longboard-noboard-split maybe?
by PTTR
Sun Jul 15, 2012 12:41 am
Forum: Ski/Snowboard Design and Layup
Topic: Fiberless skis
Replies: 14
Views: 11968

I also posted info here at skibuilders about the all wood ski
http://www.skibuilders.com/phpBB2/viewt ... c&start=15.
I was looking for that post but couldn't find it. figured it would appear in a couple of posts if this tread started running.
by PTTR
Sat Jul 14, 2012 2:59 pm
Forum: Ski/Snowboard Design and Layup
Topic: Fiberless skis
Replies: 14
Views: 11968

Hepp veguis I have been skiing on these for the last couple of winters. http://www.tegsnas.com/ehandelskidor Belive that they are made of 100 % wood. But these are for touring, not downhill. A woodcore with veneers instead of fiberglas could work I guess. Natures own carbon fiber! try it and write a...
by PTTR
Mon Jun 11, 2012 3:17 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: I-Beam
Replies: 4
Views: 3226

I can't tell you how big your beems has to be. Mine are made out of wood. but make sure they are strong. I repositioned our half full 40 foot shipping container today with the bladder from my skipress.

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