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  Topic: Coated fiberglass?
chrislandy

Replies: 12
Views: 1751

PostForum: Materials and Supplies   Posted: Mon May 08, 2017 2:56 am   Subject: Coated fiberglass?
It looks like a kind of pre-preg, the resin is applied to one side only to stabilise the weave, then when you heat and apply pressure from a press or autoclave, the resin reduces in viscosity and impr ...
  Topic: Going to make sublimation press
chrislandy

Replies: 15
Views: 6668

PostForum: Equipment and Tools (e.g., ski press, core profiler, etc)   Posted: Thu Apr 20, 2017 4:10 am   Subject: Going to make sublimation press
You need a proper RIP (Raster Image Processing) software

You can occasionally find them used (licence) but a lot of them use a dongle - or at least the older ones anyway.

I use Colorgate Product ...
  Topic: ISO fire hose
chrislandy

Replies: 7
Views: 1698

PostForum: Yard Sale (non commercial)   Posted: Mon Mar 13, 2017 3:36 am   Subject: ISO fire hose
Here in europe you can get decent firehose at builders supplies sold as "construction hose". Same quality and specs like firehose (except certification) and decent price. + they have it in b ...
  Topic: buying materials in Australia
chrislandy

Replies: 12
Views: 3508

PostForum: Materials and Supplies   Posted: Mon Mar 13, 2017 3:33 am   Subject: buying materials in Australia
you could try dbabicwa on here, he bought a job lot of materials a few years ago
  Topic: 2.5d vs 3d CAM software
chrislandy

Replies: 18
Views: 4390

PostForum: Equipment and Tools (e.g., ski press, core profiler, etc)   Posted: Thu Jan 26, 2017 12:49 am   Subject: 2.5d vs 3d CAM software
Any 3d modelling program has a steep learning curve, especially anything by autodesk! I've been using autocad and others for 20yrs now and still learning things!

Well worth it though, Autodesk do a ...
  Topic: HB (Hansen Boards)
chrislandy

Replies: 224
Views: 52460

PostForum: Journals: Log Your Ski Building Progress   Posted: Mon Jan 23, 2017 1:40 am   Subject: HB (Hansen Boards)
I'd move the taper forward about an inch past where you cracked it, yes that may have been a weak point because of the plug but that looks like bending failure rather than core shear failure, so basic ...
  Topic: HB (Hansen Boards)
chrislandy

Replies: 224
Views: 52460

PostForum: Journals: Log Your Ski Building Progress   Posted: Fri Jan 20, 2017 4:28 am   Subject: HB (Hansen Boards)

Hi Chrislandy, When do you do that with the APF7? After the layup and before clear coating with time for it to dry?

yep, before clear coat think of it as a invisible pinhole filler Wink as it blen ...
  Topic: HB (Hansen Boards)
chrislandy

Replies: 224
Views: 52460

PostForum: Journals: Log Your Ski Building Progress   Posted: Thu Jan 19, 2017 3:15 am   Subject: HB (Hansen Boards)
Just a little tip for getting rid of the pinholes on the carbon, get hold of some APF7 (sold by Ami-con in the UK) it's known is composites circles as "black magic" as you just give the carb ...
  Topic: Stiffness Calculation
chrislandy

Replies: 18
Views: 8117

PostForum: Ski/Snowboard Design and Layup   Posted: Fri Nov 18, 2016 3:39 am   Subject: Stiffness Calculation
I did some work on this during my masters thesis, but can't remember all the bits now (it was a few years ago!)

You can model it but the most accurate was from empirical testing because it is so re ...
  Topic: Biax / Triax glass with finish quality
chrislandy

Replies: 4
Views: 1921

PostForum: Materials and Supplies   Posted: Fri Sep 02, 2016 2:44 am   Subject: Biax / Triax glass with finish quality
There's a big show in the UK in November where you can talk to pretty much every manufacturer & weaver in Europe, it's a really good show over a couple of days. It's free entry with prior registra ...
  Topic: Biax / Triax glass with finish quality
chrislandy

Replies: 4
Views: 1921

PostForum: Materials and Supplies   Posted: Tue Aug 30, 2016 7:35 am   Subject: Biax / Triax glass with finish quality
try Eric at http://www.carrreinforcements.com/ in the UK, they are weavers.

They will do or have stock of most things, their website is a bit rubbish and out of date and certainly doesn't show what ...
  Topic: Stiffness Calculation
chrislandy

Replies: 18
Views: 8117

PostForum: Ski/Snowboard Design and Layup   Posted: Mon May 09, 2016 4:52 am   Subject: Stiffness Calculation
Standard linear elastic laminate analysis (or classical laminate theory) is perfectly good, I really wouldn't bother with FEA unless you have a barrel load of time to kill, it takes a lot of insight ...
  Topic: Pressing Skis with Titanal
chrislandy

Replies: 17
Views: 6176

PostForum: Ski/Snowboard Design and Layup   Posted: Tue Apr 26, 2016 6:08 am   Subject: Pressing Skis with Titanal
When you say larger camber, is it the same, less or more than the former?

I can understand why glass and carbon ski's/boards can end up with different camber off the same mould, purely due to the ...
  Topic: Pressing Skis with Titanal
chrislandy

Replies: 17
Views: 6176

PostForum: Ski/Snowboard Design and Layup   Posted: Tue Apr 26, 2016 2:12 am   Subject: Pressing Skis with Titanal
That might make sense but then why do my carbon skis have twice the camber as my glass skis. I have to cook top heavy by 25 degrees f to get normal camber in my carbons.

Interesting...

I'm look ...
  Topic: Pressing Skis with Titanal
chrislandy

Replies: 17
Views: 6176

PostForum: Ski/Snowboard Design and Layup   Posted: Mon Apr 25, 2016 7:08 am   Subject: Pressing Skis with Titanal
My gut is telling me that there won't be significant springback with 0.6mm ali, I'm swaying towards differential expansion of the top and btm layers or ali. My thinking behind this? With only 30mins c ...
 
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