Search found 280 matches

by SHIF
Thu Oct 15, 2009 9:51 am
Forum: Ski/Snowboard Design and Layup
Topic: binding mount reinforcement
Replies: 13
Views: 5396

On one pair I added an extra layer of triaxial glass under foot. On several others I added nothing. These all had one layer of 20oz. triaxial glass and one layer of 4.5oz unidirectional carbon fiber above and below their bamboo cores. Be sure to use the proper size drill bit for your binding screws....
by SHIF
Wed Oct 14, 2009 6:19 pm
Forum: Ski/Snowboard Design and Layup
Topic: bamboo side wall or just leave the core
Replies: 6
Views: 3996

how much does that decking material run for ? I bought nominal 1x4 planks for $2.30 per linear foot. Twelve feet is plenty to make sidewall blocks for 4 skis. These measure 3/4 x 3 1/2 inches. I ripped them into strips 5/8 inch wide with a strip left over to make into stirring sticks. Use a ripping...
by SHIF
Wed Oct 14, 2009 2:17 pm
Forum: Ski/Snowboard Design and Layup
Topic: bamboo side wall or just leave the core
Replies: 6
Views: 3996

My skis have vertically laminated bamboo cores with UHMW sidewalls. I'm in the process of building a couple more skis, this time using Macaranduba (Brazilian redwood) decking boards for the sidewalls. This rainforest hardwood is about as tough as UHMW but it cuts, sands, and bonds like wood because ...
by SHIF
Mon Oct 12, 2009 11:10 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Show off your work tables / benches
Replies: 7
Views: 4268

I simply use a solid-core door as a work surface, 36 x 80 inch size. This is clamped to the top beam on my ski press frame. I designed the frame so this work surface is the same height as my table saw, so it also functions as a large out-feed table when ripping boards to make templates, press forms,...
by SHIF
Thu Oct 01, 2009 1:50 pm
Forum: Ski/Snowboard Design and Layup
Topic: Teak as side walls
Replies: 3
Views: 2878

Macaranduba

I proposed using teak wood for sidewalls but have since reconsidered. My preferred core material is vertically laminated bamboo (flooring boards) and I've build several pairs having UHMW sidewalls. That material is very difficult to bond with and although its tough, it tends to delaminate from the b...
by SHIF
Tue Sep 29, 2009 8:16 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: chamfer router bit
Replies: 8
Views: 5821

I prefer angled sidewalls too. I grind the sides of the ski down square to the the steel edges with a flap-wheel sander. This grinding process results in a ski with vertical sidewalls all around, ready for the router process used to carve a bevel on the top edges as shown: http://www.fototime.com/%7...
by SHIF
Fri Sep 18, 2009 2:51 pm
Forum: Materials and Supplies
Topic: formica topsheet
Replies: 26
Views: 12067

Re: formica topsheet

ralston wrote:has anybody run formica as a topsheet?
I pondered this idea a while ago and concluded that Formica or any other such laminate material is too brittle. It would look good coming out of the mold but probably get all busted to heck the first day on the mountain.

-S
by SHIF
Mon Sep 07, 2009 5:13 pm
Forum: Ski/Snowboard Design and Layup
Topic: Need help with cutting ski out after it's pressed
Replies: 11
Views: 6068

... Shif, I would be very interested to see a wider angle of your sidewall beveling jig. I haven't seen anyone use that method before. Thanks again! The chamfer bit shown has a 22.5 degree angle. I wanted to use 30 or maybe 45 degrees but that would require wider UHMW plastic sidewall blocks which ...
by SHIF
Mon Aug 31, 2009 10:19 am
Forum: Ski/Snowboard Design and Layup
Topic: base movement
Replies: 6
Views: 4330

Double sided masking tape, three small pieces 2 inches long each. This technique minimizes base indentations: I first apply three 2 inch long pieces of double sided masking tape to the bottom of the base material. Then lay down a layer of blue 3M painters tape from a 6 inch wide roll. Then I cut the...
by SHIF
Sun Aug 30, 2009 7:03 pm
Forum: Ski/Snowboard Design and Layup
Topic: Need help with cutting ski out after it's pressed
Replies: 11
Views: 6068

I cut off the excess flash using my Bosch jigsaw with combo blades. Cutting from the bottom as to see the metal edges, I try to stay within a few millimeters of the ski edges. I can cut out an entire pair of skis with one blade if I'm careful and don't go too fast. The Bosch saw has an orbit mode wh...
by SHIF
Thu Jul 16, 2009 7:30 pm
Forum: Ski/Snowboard Design and Layup
Topic: Issues Going from Snocad to SolidWorks, Turbo Cad, Etc
Replies: 10
Views: 8120

The poly-line curve issue is a result of DXF. That's just the way it does it. You're better off starting over from scratch using Solidworks. Then arcs will be arcs and tangent curves will be truly tangent.

Cheers,

-S
by SHIF
Mon Jun 22, 2009 6:58 pm
Forum: Materials and Supplies
Topic: materials in new zealand?
Replies: 12
Views: 6045

mike8353 wrote:Do you guys know anyone around LA area who may have materials? Im heading to torrance in august and would like to bring some materials back if possible.
Action Sports Technology:
http://www.snowboardmaterials.com/

I don't know if you can actually visit the place, give them a call or email.

-S
by SHIF
Thu Jun 04, 2009 7:58 am
Forum: Materials and Supplies
Topic: I'm looking for cork!
Replies: 2
Views: 2670

McMaster has 1/2" x 12 x 36 sheets, perhaps two layers of this stuff will do.

http://www.mcmaster.com/#9487k5/=266f4a


-S
by SHIF
Fri Apr 24, 2009 2:24 pm
Forum: Ski/Snowboard Design and Layup
Topic: Vacuum bagging AND pressing for cap construction?
Replies: 28
Views: 27755

This link was posted here on the SB forum last month: http://www.freeshaper.com/snow/index.php?rub=ACCUEIL&ssrub=Interview#p5 Way down the page (90%) you can see a black rubber ? mold used to form the upper layers into a cap construction. No side walls to mess with, nice. These guys have a nice ...
by SHIF
Fri Apr 17, 2009 10:25 am
Forum: Materials and Supplies
Topic: Do you like my Carbon Fiber?
Replies: 8
Views: 5777

It should hold together when split lengthwise into six inch strips because it has the hot melt binder in the fill direction. I use similar uni-carbon in my ski lay up, two layers of 4.5 oz, one above and one below the core (vertically laminated bamboo). I also use 20 oz biaxial glass (+/- 22 degrees...