Search found 477 matches
- Mon Jun 23, 2014 2:57 am
- Forum: Journals: Log Your Ski Building Progress
- Topic: Goz thread
- Replies: 130
- Views: 75786
Hi, the reason it so easily torsioned is the fibre orientation: its 0° and 90°. For torsional rigidity u'd need +45°/-45° fibre orientation. The 0° in your board makes the flex harder, the 90° isn't doing too much at all :) Well, it adds a harder flex crosswise, which is something we don't really ne...
- Mon Jun 23, 2014 2:51 am
- Forum: Ski/Snowboard Design and Layup
- Topic: The pouring urethane sidewall thread
- Replies: 288
- Views: 193957
Its 65A (see page before). I ordered some additive for making epoxy flexible, so will do quite similar tests. My plan is to pour the epoxy sidewalls in its end shape already (after the core has been profiled), and also pour the 0.8mm rabbet for the edge as well. So no machining after the pouring wil...
- Thu Jun 19, 2014 1:43 pm
- Forum: Ski/Snowboard Design and Layup
- Topic: The pouring urethane sidewall thread
- Replies: 288
- Views: 193957
Hi, thinking about pouring sidewalls quite a lot at the moment. One basic thought I have: As PU seems to be quite hard to handle, why not use epoxy? Pure Epoxy will surely be too hard, but there are additives to make it more flexible (e.g. http://shop1.r-g.de/art/130140). Also some extras like cotto...
- Thu May 29, 2014 10:09 am
- Forum: Journals: Log Your Ski Building Progress
- Topic: Pressing a nice Cap - first try
- Replies: 22
- Views: 14389
Well, there is one wooden sidewall I would totally trust: ebony :) I made quite some knife handles of ebony, this stuff isn't impressed by water at all. But will go for some local wood if I decide to try my luck with wooden sidewalls. Or pouring... Well, will see how durable the cap is, and if it is...
- Thu May 29, 2014 7:32 am
- Forum: Materials and Supplies
- Topic: Vacuum press table: Rubber Foil? Or something else?
- Replies: 16
- Views: 11463
- Thu May 29, 2014 7:19 am
- Forum: Journals: Log Your Ski Building Progress
- Topic: Pressing a nice Cap - first try
- Replies: 22
- Views: 14389
@chrismp: thought about this already, might give it a try. From what I read making the rabbet for the edge after attaching the sidewalls usually ends up in the sidewalls being off the woodcore again. So I would have to take away this 0.8mm as well, so the sidewalls will be quite thin when they are p...
- Wed May 28, 2014 12:21 pm
- Forum: Journals: Log Your Ski Building Progress
- Topic: Pressing a nice Cap - first try
- Replies: 22
- Views: 14389
Hi MM, I want cap because I can't figure a good way to have precise sidewalls and still have usable planer chips at the same time. If I attach the sidewalls before having the core in the planer all the planer chips are just waste. And for having precise sidewalls after the core has been planed i lac...
- Wed May 28, 2014 10:51 am
- Forum: Journals: Log Your Ski Building Progress
- Topic: Pressing a nice Cap - first try
- Replies: 22
- Views: 14389
- Wed May 28, 2014 6:24 am
- Forum: Journals: Log Your Ski Building Progress
- Topic: Pressing a nice Cap - first try
- Replies: 22
- Views: 14389
Success ;) I obviously came back in time, was lucky. What i don't know is if the resin was already cured a bit when we put the pressure back up, only time can tell... if the cap falls away after 2 days of skiing... So, time for pictures: http://www.spame.de/skibau/IMG_0933_klein.JPG The camber/rocke...
- Wed May 28, 2014 5:47 am
- Forum: Materials and Supplies
- Topic: Vacuum press table: Rubber Foil? Or something else?
- Replies: 16
- Views: 11463
- Tue May 27, 2014 11:17 pm
- Forum: Journals: Log Your Ski Building Progress
- Topic: Pressing a nice Cap - first try
- Replies: 22
- Views: 14389
- Tue May 27, 2014 12:00 pm
- Forum: Materials and Supplies
- Topic: Vacuum press table: Rubber Foil? Or something else?
- Replies: 16
- Views: 11463
Hmm, the silicone costs 260€ ;) Damn that's expensive! The site says the rubber can be used up to 80°C. With our current setup we will struggle to get above 65°C anyway, so our amount of heat shouldn't be a problem. But if it ages quickly when used with this heat it doesn't make sense of course. @ch...
- Tue May 27, 2014 11:28 am
- Forum: Materials and Supplies
- Topic: Vacuum press table: Rubber Foil? Or something else?
- Replies: 16
- Views: 11463
Vacuum press table: Rubber Foil? Or something else?
Hello, as the cheap vacuum foil I've been using for now has made it to the end of its live, I'm wondering what to use instead. When searching around I found this thick yellow rubber: http://shop1.r-g.de/art/390350 Looks quite nice to me, and as far as I remember OAC used it but then switched to sili...
- Tue May 27, 2014 11:20 am
- Forum: Journals: Log Your Ski Building Progress
- Topic: Pressing a nice Cap - first try
- Replies: 22
- Views: 14389
:( :( :( :( Pressed the Cap today. Everything set up, the fabric pressed nicely to the sides, good pressure, so I put the heat box on and went away. When I came back to check about a good hour later all the pressure was gone. A big hole was in the vacuum foil where I never would have expected it. Pu...
- Mon May 26, 2014 10:33 pm
- Forum: Materials and Supplies
- Topic: choice of wood
- Replies: 23
- Views: 20817