Search found 48 matches

by rnordell
Thu Aug 04, 2016 3:14 pm
Forum: Ski/Snowboard Design and Layup
Topic: Keeping edge flat while bending.
Replies: 14
Views: 12221

Twizz, I'm thinking that gketcham is using the set of nippers that I made for him. Can you post a photo of the jaw design on your set so we can all see what design works well? I also use a nipper but I don't think I can make edges made as fast as you do! Maybe I just fuss too much over them? Thanks,...
by rnordell
Fri Jun 05, 2015 9:59 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Adustable Bottom mold again
Replies: 17
Views: 15247

I can not speak from long term experience with silicone heat blankets in presses, but we do use them for heated repairs on composite aircraft structures under vacuum bags because of their flexible, conformable nature. My rational for not including it in my press was a concern with durability of the ...
by rnordell
Tue Jun 02, 2015 4:50 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Adustable Bottom mold again
Replies: 17
Views: 15247

Probably no more investment or drama than a 11'6" x 18", 2300 lb autoclave. Yes, the press as designed was going to cost around $11,000 in materials, but when you are accustomed to designing and certifying modifications on multi million dollar airplanes you tend to take that mentality into...
by rnordell
Tue Jun 02, 2015 1:28 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Adustable Bottom mold again
Replies: 17
Views: 15247

My design has the top of the press open like the clam shell style presses. This was to be done with an air/hydraulic piston that is normally used in engine hoist. The gap on the hinge side is able to be adjusted with an eccentric cam (like what you see on a sheet metal brake). The bottom platten is ...
by rnordell
Sun May 31, 2015 9:48 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Adustable Bottom mold again
Replies: 17
Views: 15247

Langzauner presses start at 120,000€ for the manually adjustable press, 180,000€ for the automatic CNC adjustable press. I fully designed my own version of a manually adjustable Langzauner, but before I started building the press I built a autoclave instead. The autoclave also has a fully adjustable...
by rnordell
Mon Apr 06, 2015 6:05 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Base grinding
Replies: 25
Views: 20106

I have thought of getting one of the ski visions base tools but have not pulled the trigger on it yet. Kalvis, you could get one and let us know how it works :) http://skivisions.us/
by rnordell
Tue Mar 24, 2015 7:54 pm
Forum: Aprés Ski Building
Topic: New guy in olympia wa
Replies: 8
Views: 8275

I've used both 7075-T6 and 2024-T3 in my skis. Both are readily available with their common use in the aviation industry. The best bonding options have both mechanical and chemical bonding. I first abrade the surface, with a quick hit on the 80 grit drum sander. I then acid etch and chromate convers...
by rnordell
Tue Mar 03, 2015 9:39 pm
Forum: Ski/Snowboard Design and Layup
Topic: Ramp skis patent for new rapid-prototyping.
Replies: 16
Views: 14799

Here is the patent application. http://www.google.com/patents/US20140062064 The first method of using a machined out flat steel plate that doubles as the edge seems heavy. The second method of cutting a channel in the ptex for the edge to sit in is not really that new, essentially use the ptex sheet...
by rnordell
Sun Feb 15, 2015 11:57 am
Forum: Ski/Snowboard Design and Layup
Topic: Random questions
Replies: 35
Views: 25248

I guess I should have clarified. I use 0.080" because I usually machine out a pocket on the aluminum part. The pocket is the depth of the base material + 0.005" to control the bond line thickness. This makes the remaining flange that overlaps the abraded inner surface of the base material ...
by rnordell
Sun Feb 15, 2015 11:57 am
Forum: Ski/Snowboard Design and Layup
Topic: Random questions
Replies: 35
Views: 25248

I guess I should have clarified. I use 0.080" because I usually machine out a pocket on the aluminum part. The pocket is the depth of the base material + 0.005" to control the bond line thickness. This makes the remaining flange that overlaps the abraded inner surface of the base material ...
by rnordell
Sun Feb 15, 2015 8:17 am
Forum: Ski/Snowboard Design and Layup
Topic: Random questions
Replies: 35
Views: 25248

I use either 2024 or 6061 aluminum, thickness usually 0.080" but this sometimes changes depending on what I'm doing with it. I made matched dies to stamp the tip curvature in so that it matches my layup tooling. I heat treat the aluminum and stamp it in the water quenched condition to minimize ...
by rnordell
Sun Feb 15, 2015 8:17 am
Forum: Ski/Snowboard Design and Layup
Topic: Random questions
Replies: 35
Views: 25248

I use either 2024 or 6061 aluminum, thickness usually 0.080" but this sometimes changes depending on what I'm doing with it. I made matched dies to stamp the tip curvature in so that it matches my layup tooling. I heat treat the aluminum and stamp it in the water quenched condition to minimize ...
by rnordell
Sat Feb 14, 2015 10:17 pm
Forum: Ski/Snowboard Design and Layup
Topic: Random questions
Replies: 35
Views: 25248

https://www.facebook.com/716skis/photos/pb.329972093712343.-2207520000.1423979321./330035047039381/?type=3&theater https://www.facebook.com/716skis/photos/pb.329972093712343.-2207520000.1423979321./330034640372755/?type=3&theater You can see the metal tip and tail section in the ski with the...
by rnordell
Sat Feb 14, 2015 10:08 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Bent Green Things 2014/15
Replies: 40
Views: 26618

I have the Amana spoil board cutter. Love it. Removes material quickly and leaves a fine finish. Indexable inserts are great for longevity, just rotate 90 deg after they start to dull to get a fresh cutting edge. Well worth the $180.