Search found 1140 matches

by Richuk
Mon Feb 16, 2015 4:55 pm
Forum: Ski/Snowboard Design and Layup
Topic: Base flatness thread
Replies: 30
Views: 20347

DT, Most people haven't ) It means cutting up a board. Its a good thing to do. Let's you see what's going on and what needs adjusting. The second calculator is a good one - it will give you are sense of expected thickness of the laminate. Dry would be at the very extreme end of the issue. http://www...
by Richuk
Mon Feb 16, 2015 2:03 pm
Forum: Ski/Snowboard Design and Layup
Topic: Base flatness thread
Replies: 30
Views: 20347

DT, Skimann mentioned that his top mold could be a little tighter, so the first step is to iron that out. A few things might help, Have you tried put a blank snowboard core in the press and running a normal heat cycle? Does it come out flat? This is a good way to understand the potential effects of ...
by Richuk
Mon Feb 16, 2015 5:10 am
Forum: Journals: Log Your Ski Building Progress
Topic: Bent Green Things 2014/15
Replies: 40
Views: 26593

Try a set of racket straps in lieu of actuators. Add a couple of spacer between the top and bottom mold so that it isn't damaged during the trial. The thickness of the tipspacer. This is what co-surfer used for a while. Edit: Pinch points can be created during inflation of the bladder. Usually the b...
by Richuk
Sat Feb 14, 2015 12:38 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Bent Green Things 2014/15
Replies: 40
Views: 26593

Pressure, or lack of pressure around the tips can cause an issue with raised edges. Adjust you press design to include linear activators ... or a set of four bicycle pumps, whatever suits your budget. Otherwise, you are fighting against the edge set .. leading to internal tensions raising the edge s...
by Richuk
Tue Oct 21, 2014 3:54 am
Forum: Journals: Log Your Ski Building Progress
Topic: Juke 2013/2014
Replies: 64
Views: 73320

Whether you wet out the core. It depends. If you are using bamboo as a core material, you can do either because it makes no difference, as the epoxy does not penetrate the material i.e. surface preparation is the most important factor. If you are using hardwood/softwood core, then you need to hold i...
by Richuk
Mon Sep 29, 2014 11:01 am
Forum: Journals: Log Your Ski Building Progress
Topic: Trying to show off the core this season...
Replies: 23
Views: 15134

Have you factored in the condition of the fibre before pressing. Storing it in the airing cupboard and or put it on the heat blanket in advance of use might solve this problem for you.

Its like putting welding rods in the oven in advance of use, you get better flow )
by Richuk
Mon Sep 08, 2014 1:43 pm
Forum: Journals: Log Your Ski Building Progress
Topic: "you building what? Are you mad?"
Replies: 208
Views: 114836

Great work man, looks like you've been having fun!
by Richuk
Tue Sep 02, 2014 1:27 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Divide Rides
Replies: 332
Views: 207116

Great film - looking forward to seeing the full feature length version )
by Richuk
Sun Aug 31, 2014 1:02 pm
Forum: Ski/Snowboard Design and Layup
Topic: binding reinforcement
Replies: 16
Views: 12669

Epoxy, it will fill any gaps. A negative mdf template and a guided router bit will help you improve the finish the next time you do this. A layer of fibreglass between the two parts would increase the pull out resistance. Sharpen the drill bit before drilling the holes for the binding screws, this w...
by Richuk
Thu Aug 28, 2014 12:46 pm
Forum: Materials and Supplies
Topic: choice of wood
Replies: 23
Views: 20748

Great insight Eric.

You are right, using ambient cure epoxy will simplify the process. Leaving only the calibration of pressure to obtain the desired laminate thickness using an online tool like this: http://www.saertex.com/materialrechner/ ... echner.php
by Richuk
Sun Aug 24, 2014 1:56 pm
Forum: Materials and Supplies
Topic: choice of wood
Replies: 23
Views: 20748

As you appreciate, the issue is 'work', impacting the fatigue resistence of the wood (or not), so the relationship is a little more complex. Broadbrush ... Light weight, open pore soft wood ... then you are turning the core into a composite, a wood epoxy composite. This means more epoxy, ideally a l...
by Richuk
Fri Aug 22, 2014 1:26 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Linear bearings
Replies: 10
Views: 8559

Well done with the bearings! I'm not sure you are going to get the AL angle to provide the results you require ... you may find that they twist when pushed up from below, especially as you will be pressing down from above. You can make accurate rails using a strip of wood screwed to mdf. Pass the md...
by Richuk
Fri Aug 22, 2014 12:54 pm
Forum: Materials and Supplies
Topic: choice of wood
Replies: 23
Views: 20748

The stuff about the design and layout of the pores of different wood species is good and seems to really be a factor in choosing different wood for what you want from a core. As a general rule, the more dense the wood, the less sensitively you will need to treat the issuses of resin ratio, resin vi...
by Richuk
Thu May 01, 2014 11:21 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: CNC - Temperature Distortion
Replies: 39
Views: 28727

Click the go back arrow and its there.
by Richuk
Thu Apr 17, 2014 2:04 pm
Forum: Ski/Snowboard Design and Layup
Topic: Veneer finish
Replies: 32
Views: 24119

Nope - I can't find the link

Here is an alternative: http://www.endura.ca/index.html , the mechanical properties of the different products are missing, but they appear open to answering a few questions.