Search found 379 matches

by gav wa
Thu Jul 03, 2014 8:32 am
Forum: Ski/Snowboard Design and Layup
Topic: Testing Epoxy sidewall pouring
Replies: 11
Views: 8245

That is a huge difference from warm to cold. There are several different reactive rubbers and polymers used to toughen (add flex) epoxy. Some are very bad at cold temps and this is probably the problem you are having. Maybe try a different toughening agent. Solid CTBN might be the best option if you...
by gav wa
Mon Jun 30, 2014 4:22 pm
Forum: Journals: Log Your Ski Building Progress
Topic: b2therye's ski's
Replies: 93
Views: 56429

Is that adidas tracksuit waterproof? If so that is the s#*t.
I want one.
Does it have a powder skirt?
by gav wa
Mon Jun 23, 2014 6:01 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Goz thread
Replies: 130
Views: 75379

What type of camber profile is it? You might be able to use it as a jib board? Time to practice your butters maybe :D
by gav wa
Sun Jun 22, 2014 11:20 pm
Forum: Ski/Snowboard Design and Layup
Topic: The pouring urethane sidewall thread
Replies: 288
Views: 193125

I have some epoxy that is 65 shore, not brittle at all and costs only $160 for 6 kilo. The cheapest smooth on price I have found is more than double that. This epoxy has been used for filling voids in timber because it flexes with the wood as it ages, it also excepts colours well and can be used to ...
by gav wa
Fri Jun 20, 2014 6:14 am
Forum: Ski/Snowboard Design and Layup
Topic: The pouring urethane sidewall thread
Replies: 288
Views: 193125

Any time i ever messed witha surf board i broke the fins. Damn rocks, that and i cant surf. They must make them different now. HAHA nah they haven't changed much, a skinny bit of plastic/epoxy with a 90kg human weight on top of it slamming into a rock at 20mph still breaks. But at least it means yo...
by gav wa
Fri Jun 20, 2014 5:30 am
Forum: Ski/Snowboard Design and Layup
Topic: The pouring urethane sidewall thread
Replies: 288
Views: 193125

MM - pretty much just hoping for something that is similar flex and hardness to most factory sidewalls, is easy to pour and bonds easily. Epoxy will obviously bond well with epoxy, and is cheaper than casting resin plus it means one less material to buy so bulk buying becomes more of an option too. ...
by gav wa
Thu Jun 19, 2014 2:15 pm
Forum: Ski/Snowboard Design and Layup
Topic: The pouring urethane sidewall thread
Replies: 288
Views: 193125

I have what is known as a soft epoxy (65 shore) plus a bag of cotton flock and one of ground glass to try exactly what you are talking about. I'm traveling for work at the moment so won't have any results for two weeks. This is the process guys over here use to make fins for their custom surfboards ...
by gav wa
Sat Jun 07, 2014 5:26 am
Forum: Ski/Snowboard Design and Layup
Topic: drawing directly on veneers
Replies: 13
Views: 10253

The wood burning would look awesome. I have just done some test pieces through an inkjet printer. The guys on here do it quite a bit. I then thinned some epoxy down a little to help penetration then brushed it onto the veneer. I gave the veneer 3 days to leach out the solvents from the ink and also ...
by gav wa
Sat Jun 07, 2014 5:20 am
Forum: Journals: Log Your Ski Building Progress
Topic: Kampai Custom
Replies: 117
Views: 81162

I got the steel but didn't get the bladder made, a mate come by and we started making a new hybrid rocker mold. I still think it is very possible though. The local hardware has 1.5mm vinyl sheet for $30 a meter. so gonna be a $90 bladder. I have some thinner stuff lying around that I will use as a t...
by gav wa
Fri Jun 06, 2014 4:34 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Kampai Custom
Replies: 117
Views: 81162

Im going to try for a 14 inch bladder without a top mold or cat track. Without a cat track I can shorten the tip sections of the bottom mold so the rise and lower that the bladder has to conform to is not too much. This way I can use two strips of steel to clamp the top of the bladder as a seal. 25 ...
by gav wa
Thu Jun 05, 2014 3:43 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Kampai Custom
Replies: 117
Views: 81162

I think your idea of using vinyl is a good one. Can get a poly vinyl sheet cheap as that is very flexible but also pretty tough.
Another job for the weekend :)
by gav wa
Thu Jun 05, 2014 2:42 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Kampai Custom
Replies: 117
Views: 81162

Ii have a couple of ideas for the three seems (the top and the two ends) but they are hard to discribe. I have some sheets of 1.6mm rubber at work, I might try a test bladder too. If I can get it to work without a top mold that would save heaps of time retooling the press for different shapes. No mo...
by gav wa
Thu Jun 05, 2014 6:42 am
Forum: Journals: Log Your Ski Building Progress
Topic: Kampai Custom
Replies: 117
Views: 81162

Chrismp - I hadn't actually planned on much at all, it was just some day dreaming while I was at work. Maybe when laying out whatever resin is used a few inches along each side of the glass could be left free of resin. Then when the main part has set, overlap the two edges and pour resin into this s...
by gav wa
Thu Jun 05, 2014 5:00 am
Forum: Aprés Ski Building
Topic: READ THE FORUM AND STOP ASKING THE SAME OLD QUESTIONS!!!!
Replies: 36
Views: 27739

One point that can cause people to ask a lot of questions rather than just trying something and seeing if it works is the cost of materials. Not everybody here has easy access to materials and therefore freight costs really add up. I know for myself a snowboard costs over $220 just in materials and ...
by gav wa
Thu Jun 05, 2014 4:49 am
Forum: Journals: Log Your Ski Building Progress
Topic: Kampai Custom
Replies: 117
Views: 81162

A 16 inch bladder, now that would be cool, and probably makes life a bit easier too eh. I was actually toying with the idea today of making a large bladder myself. some fiberglass and maybe silicone or something tougher. Would obviously need to hydrostatic test it after its finished but that is easy...