Search found 479 matches
- Mon Aug 04, 2014 11:51 am
- Forum: Ski/Snowboard Design and Layup
- Topic: The pouring urethane sidewall thread
- Replies: 288
- Views: 203139
- Mon Jul 28, 2014 11:27 am
- Forum: Ski/Snowboard Design and Layup
- Topic: The pouring urethane sidewall thread
- Replies: 288
- Views: 203139
Hi, built a vacuum pot for degasing the PU (used the cheapest big cooking pot I could find - 18 Euros for an 11 liter pot). It really improves the results a lot, hardly any bubbles in the pured testpiece at all. The only complicated part is knowing when the resin is ready to pour - take it out too e...
- Sun Jul 20, 2014 10:34 am
- Forum: Ski/Snowboard Design and Layup
- Topic: The pouring urethane sidewall thread
- Replies: 288
- Views: 203139
Well, water based color in PU, must have been some nice foam :) But: 1.36kg not enough for a pair of skis? The way I plan it I should get 2 pairs from that amount... Will give the Task 12 a try when I figured all the tiny things you need to know when working with PU. Building a vacuum degas thingy f...
- Fri Jul 18, 2014 9:58 am
- Forum: Ski/Snowboard Design and Layup
- Topic: The pouring urethane sidewall thread
- Replies: 288
- Views: 203139
- Fri Jul 18, 2014 5:02 am
- Forum: Ski/Snowboard Design and Layup
- Topic: The pouring urethane sidewall thread
- Replies: 288
- Views: 203139
- Thu Jul 17, 2014 8:08 am
- Forum: Ski/Snowboard Design and Layup
- Topic: The pouring urethane sidewall thread
- Replies: 288
- Views: 203139
- Wed Jul 16, 2014 9:32 am
- Forum: Ski/Snowboard Design and Layup
- Topic: The pouring urethane sidewall thread
- Replies: 288
- Views: 203139
Hi, read in this forum that a shorter pot life reduces bubbles, thats why I was searching for a faster PU. The thought that was mentioned was that if the PU kicks faster it has less time to interact with humidity and so on => less time to form bubbles. On the other hand: the fact that bubbles appear...
- Tue Jul 15, 2014 8:24 am
- Forum: Ski/Snowboard Design and Layup
- Topic: The pouring urethane sidewall thread
- Replies: 288
- Views: 203139
Hi, had a look at all the Smooth-On products. And I found 65D. It has a very short pot life of 2.5 minutes, so something to work quick :) What I like about it compared to 3xx: A bit softer (65D instead of 70D) and a much higher elongation break of 20% (instead of 5/7.5%). And it costs exactly the sa...
- Tue Jul 15, 2014 7:22 am
- Forum: Ski/Snowboard Design and Layup
- Topic: Testing Epoxy sidewall pouring
- Replies: 11
- Views: 8284
- Tue Jul 15, 2014 7:20 am
- Forum: Ski/Snowboard Design and Layup
- Topic: The pouring urethane sidewall thread
- Replies: 288
- Views: 203139
- Fri Jul 04, 2014 11:01 am
- Forum: Ski/Snowboard Design and Layup
- Topic: Testing Epoxy sidewall pouring
- Replies: 11
- Views: 8284
My main concern at the moment is that it will get too soft when in the heated press. Will try to heat it tomorrow and see how soft it gets. Also put the testpiece in the freezer again and tried to break it with all the power I have in my arms - it didn't break ;) In a finished ski, I would have litt...
- Wed Jul 02, 2014 2:59 pm
- Forum: Ski/Snowboard Design and Layup
- Topic: Testing Epoxy sidewall pouring
- Replies: 11
- Views: 8284
Hi, made a video of a test piece. Its about 12x12mm diameter, as a real sidewall can be like. 1) Room Temperature http://www.spame.de/skibau/MVI_2253.MOV 1) Fresh out of the freezer at -18°C http://www.spame.de/skibau/MVI_2254.MOV The mixture is: Resin http://shop1.r-g.de/art/100100 +12% flexibilize...
- Sat Jun 28, 2014 1:50 pm
- Forum: Ski/Snowboard Design and Layup
- Topic: Testing Epoxy sidewall pouring
- Replies: 11
- Views: 8284
Nearly forgot the negative part: The resin with the flex additive is very very liquid at room temp. This will be an issue when pouring the sidewalls, going into every little gap it might find. The cotton flocks would e perfect for this, as they make it nice to work with, but the bubbles... So its ei...
- Sat Jun 28, 2014 1:15 pm
- Forum: Ski/Snowboard Design and Layup
- Topic: Testing Epoxy sidewall pouring
- Replies: 11
- Views: 8284
Testing Epoxy sidewall pouring
Hey, thought I'd open a new topic instead of hijacking the PU pouring thread. Well, did some first tests with normal epoxy + flex additive yesterday, using: http://shop1.r-g.de/item/100100 http://shop1.r-g.de/item/130140 Tried with 10% of flexibilizer so far. Result: Wow, this is no epoxy any more! ...
- Sat Jun 28, 2014 12:38 pm
- Forum: Test and Trip Reports: How Did They Work?
- Topic: First pair testing
- Replies: 10
- Views: 14539