Search found 29 matches

by Wvmtnbiker
Fri Dec 06, 2019 9:48 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: heating a vacuum press
Replies: 13
Views: 2234

Re: heating a vacuum press

In my case it’s been less than 2mm. I usually do the layup, start to press and make sure everything is lined up correctly. Then as the press is reaching full pressure I use a laminate roller on the top of each ski at the tips and tails to make sure the top sheet is smooth. Then I’ll add heat about 2...
by Wvmtnbiker
Fri Dec 06, 2019 8:49 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: heating a vacuum press
Replies: 13
Views: 2234

Re: heating a vacuum press

I might be wrong about the wattage - it might be 1800w. Ill check when I get home. I have no problem getting it hot enough. I use Entropy and using only top heat Ill press for about 1:45 -2:00 hours. I have made the mistake of pulling too early. Heat blanket just goes on top - I have to put some woo...
by Wvmtnbiker
Fri Dec 06, 2019 7:49 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: heating a vacuum press
Replies: 13
Views: 2234

Re: heating a vacuum press

That all sounds right - I use a very thin piece of metal, then the lower heat blanket and then the thicker metal above if heating from the bottom. lately I've just been heating from the top - I lose a little camber but that's the plan. The heat blanket is 195cm x 34cm which is the width of the molds...
by Wvmtnbiker
Thu Dec 05, 2019 7:51 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: heating a vacuum press
Replies: 13
Views: 2234

Re: heating a vacuum press

I’ll get Picts for you - I’m on the road so I’ll get some posted beginning of next week. Look on alibabba for heat blankets. I used Ali rubber and gave them the dimensions and wattage, wire for 110 blanket. I’ve found the emails but can’t find a link but I’ll keep looking - cost was 115 and 45 shipp...
by Wvmtnbiker
Wed Dec 04, 2019 10:07 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Vacuum Press
Replies: 63
Views: 40377

Re: Vacuum Press

I use a metal sheet - aluminum over the mdf mould for layup. The pictures of my press have the aluminum sheet over the mould.
by Wvmtnbiker
Wed Dec 04, 2019 10:04 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Vacuum Press
Replies: 63
Views: 40377

Re: Vacuum Press

The base of the table is two layers - the bottom layer is 3/4 mdf and the top layer is 3/4 melamine screwed together at the corners. MDF by itself is too porous and the vacuum won’t work as well. I copied OACs design years ago and haven’t changed much. The vacuum line is one hole in the center of th...
by Wvmtnbiker
Wed Dec 04, 2019 9:24 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Silicone sheets in north america
Replies: 7
Views: 2000

Re: Silicone sheets in north america

$130 for 1mm x900mm x2500 mm - $40 shipping.

Model # DH2211 high tear strength silicone rubber sheet

https://deerhunter.en.alibaba.com/produ ... 6999FCz38s
by Wvmtnbiker
Wed Dec 04, 2019 9:06 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Silicone sheets in north america
Replies: 7
Views: 2000

Re: Silicone sheets in north america

I would try to get a sheet that has a elongation in the 700 range - anything less is extra work. I couldn’t find anything reasonably priced in the states so a Chinese one was about $200 including shipping. I used rubber cal sheets for a few years but they didn’t last and weren’t flexible enough. Sam...
by Wvmtnbiker
Wed Dec 04, 2019 8:50 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Vacuum Press
Replies: 63
Views: 40377

Re: Vacuum Press

The shapes were done in Draftsight which is a 2d cad program that is still free as far as I know. Figure out your design specs and start drawing. If you need specifics I can try to send you some of the drawing files but you’ll still need to download draftsight to open them. The 3/4 mdf was cut on a ...
by Wvmtnbiker
Wed Dec 13, 2017 9:32 pm
Forum: Ski/Snowboard Design and Layup
Topic: excess tip/tail epoxy vacuum press
Replies: 13
Views: 4170

thanks OAC. I greatly appreciate your advice. you and sammer were the journals i looked at the most when i started to build. the vacumaster 2000 or 3000 ?? was my blueprint for my press and I learned a ton from all the pictures/videos of your workshop so thanks for taking the time and effort for pos...
by Wvmtnbiker
Tue Dec 12, 2017 8:22 pm
Forum: Ski/Snowboard Design and Layup
Topic: excess tip/tail epoxy vacuum press
Replies: 13
Views: 4170

thanks kit and OAC. Ill anneal and prebend the next pair for sure. Now that i look back on all the pairs i've made the tips and tails that came out the best were the ones that have a very gradual bend and low rise - the ones with more pronounced bends not so much. Kit I'm buying a pair of the pliers...
by Wvmtnbiker
Fri Dec 08, 2017 10:15 pm
Forum: Ski/Snowboard Design and Layup
Topic: excess tip/tail epoxy vacuum press
Replies: 13
Views: 4170

Thanks for all the info Dave and Kit. So i just finished the skis i pressed last week and the excess epoxy on the one tip ground out in two passes so it was a lot thinner than it looked so the tips conformed to the mold better than i thought. The tails were better than before but took a lot more wor...