Search found 368 matches

by gav wa
Sun May 18, 2014 6:09 pm
Forum: Journals: Log Your Ski Building Progress
Topic: b2therye's ski's
Replies: 93
Views: 31830

What is the temp just above the surface of the ski during your heat treatment? What are you trying to achieve with the heat treatment too?
Those blisters look burnt in those pictures?
by gav wa
Sun May 18, 2014 5:22 am
Forum: Materials and Supplies
Topic: diecutting and different base materials
Replies: 2
Views: 1874

I would have to lean towards good structuring suited to the conditions and a wax job that also suits over a sintered vs extruded base. Obviously both bases structured and waxed the same the sintered will be faster hands down, especially that Volkl VRL stuff, that stuff is nuts. I have seen some pret...
by gav wa
Thu May 15, 2014 4:25 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: DIY Silicone Heat Blanket
Replies: 332
Views: 122320

I think the watts per inch is the important part to heat the laminate in a resonable amount of time. My blanket at 200cmx35 cm is 1400 watts. Takes about 25 min to get to temp. The mei one i have pulls the same amps but get to temp in about 2/3rds the time so obviously they made it better than mine...
by gav wa
Wed May 14, 2014 5:23 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: DIY Silicone Heat Blanket
Replies: 332
Views: 122320

Hey is anyone on here using blankets of around 1000 watts? I've been playing around with different circuit layouts. I won't be doing any sublimation with it and I don't want to build something that heats up in 5 minutes while drawing 8 amps per mat. So I was aiming for around 1200 watts but the best...
by gav wa
Tue May 13, 2014 6:41 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Flame treatment
Replies: 28
Views: 13645

I made a simple slide through flame treatment set up. Had to make two small burner bars. I figured having the finished base slide onto only 3 bits of tube the damage from sliding onto these should be minimal. So far the test pieces have been promising. I can adjust the flames up and down so when I g...
by gav wa
Fri May 09, 2014 7:06 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: vacuum for vacuum table
Replies: 30
Views: 14503

yeah a negative cutter tooth angle will produce downward pressure.
Another way is to use a cutter with a positive entry angle, like a 45 degree cutter, you also get other benefits too, like increase surface finish quality and feed speed.
by gav wa
Wed May 07, 2014 7:25 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: vacuum for vacuum table
Replies: 30
Views: 14503

I use one old house dyson vacuum and get heaps of hold down.
Use small holes not a channel and use the mdf with coated faces like used in cupboards. The plain mdf is very porous and loses vacuum out all the sides.
by gav wa
Wed May 07, 2014 4:00 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: safety measures for heat blanket puncture?
Replies: 5
Views: 2795

I'm just building my control box now and am fitting a 10amp circuit breaker with a built in 2 pole RCD into each blankets supply circuit. The earth is set up pretty much exactly the same as Vinman described. Remember a RCD (residual current device or also called an earth leakage breaker) only monito...
by gav wa
Tue May 06, 2014 3:53 am
Forum: Ski/Snowboard Design and Layup
Topic: The pouring urethane sidewall thread
Replies: 285
Views: 98229

dbabicwa wrote:
I've just burned 2 3A fuses on 55-60C, luckily I've got them...
Mate 3amps is only good for about 700 watts at 240 volts.
What sort of watts are your mats good for? You might need bigger fuses.
Unless you built your mats for only lower temps. I'm going to keep mine to about 1400 watts each.
by gav wa
Mon May 05, 2014 8:13 pm
Forum: Ski/Snowboard Design and Layup
Topic: The pouring urethane sidewall thread
Replies: 285
Views: 98229

Sorry mate I have been busy working on building my heat mats. I will try it this weekend though.
by gav wa
Mon May 05, 2014 4:36 am
Forum: Ski/Snowboard Design and Layup
Topic: Best way to keep your skis from sticking to your mold?
Replies: 22
Views: 11668

Thanks for the pointers mate. I bought and big roll of glad bake after your recommendation too. The big roll is nice and wide too so easy to work with.
I will try out your idea of sticking it to the base too.
by gav wa
Sun May 04, 2014 9:33 pm
Forum: Ski/Snowboard Design and Layup
Topic: Best way to keep your skis from sticking to your mold?
Replies: 22
Views: 11668

I've seen in the instruction pages of this site they say to slice the protective coating you put on the base of your skis. Slicing it along the join of the steel edge to base material.
Does anybody here do it that way?
I'm using contact paper over my base at the moment but not cutting this slit.
by gav wa
Sat May 03, 2014 5:49 pm
Forum: Journals: Log Your Ski Building Progress
Topic: the nightmare snowboard co-op
Replies: 17
Views: 12656

Hey the link to your site doesn't work. I hope you guys are still running the workshop and retail sales too, your boards looked awesome.
by gav wa
Thu May 01, 2014 6:59 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: CNC - Temperature Distortion
Replies: 39
Views: 16327

Mate I just wrote a page long post on all sorts of stuff for you, including crappy pictures I made, and it logged me out as I pressed submit :evil: :evil:

It is late here now, so I will rewrite it all in the morning, sorry mate.
by gav wa
Tue Apr 29, 2014 7:29 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: CNC - Temperature Distortion
Replies: 39
Views: 16327

you will be surprised how much vibration and deflection you can remove with different approaches to the tool path, tool cutter angle, tooth pitch etc. If you have a round edge cutter (like a cove bit) you create cutting forces at multiple angles and also quite a bit up verticle, which helps hold you...