Search found 102 matches

by 24Dave
Mon Aug 26, 2019 11:07 am
Forum: Journals: Log Your Ski Building Progress
Topic: Prototype 1
Replies: 4
Views: 364

Re: Prototype 1

Nice one Hoops! Wait, you have a CNC machine, but a trash can for a workbench, hilarious, and I love it! An easy solution for getting a stronger epoxy cure would be to get some foam paneling, screw the panels together in a box just a little bigger than your press. Blow heat in at about 300F with two...
by 24Dave
Mon May 06, 2019 6:55 pm
Forum: Yard Sale (non commercial)
Topic: Hypothetical: paulownia lumber
Replies: 2
Views: 381

Re: Hypothetical: paulownia lumber

Seems like there might be a retail market. Since Paulownia barn closed, what 10, 15 years ago, it's been a struggle to find a steady but small supply that is good quality. I think the market price went through the floor with factories that use it buying it by the container load from China. There is ...
by 24Dave
Mon May 06, 2019 6:36 pm
Forum: Ski/Snowboard Design and Layup
Topic: Pre-treating paulownia or balsa core
Replies: 15
Views: 1004

Re: Pre-treating paulownia or balsa core

I've seen average viscosity resin move through 8-10mm of paulownia when cured at 140 F. End grain balsa is commonly sealed in commercial applications, I've never used it. I have also sealed cores to keep them light. Nothing technical to it. Use a squigee, spread resin across part of your core then s...
by 24Dave
Thu Aug 23, 2018 7:07 am
Forum: Ski/Snowboard Design and Layup
Topic: Cutting out flesh on tip/tail with no edge
Replies: 21
Views: 3190

Huh, I haven't noticed that at all with the belts I have been using. There are probably better belts out there with smoother joints than what you have right now.
by 24Dave
Wed Aug 15, 2018 10:59 am
Forum: Ski/Snowboard Design and Layup
Topic: Cutting out flesh on tip/tail with no edge
Replies: 21
Views: 3190

yep SHIF discontinued, but still widely available.

mammuth, I have large Triton planer, it is a beast, runs smooth and has had no issues so far.
by 24Dave
Fri Aug 10, 2018 8:18 am
Forum: Ski/Snowboard Design and Layup
Topic: Cutting out flesh on tip/tail with no edge
Replies: 21
Views: 3190

I like to use this little hand held belt sander for any situation like sanding a little flash off. You can hold this sander on edge pretty easily in one hand. I use it quite a bit and it is more compact and cheaper than a larger tool on a floor stand. https://www.homedepot.com/p/Porter-Cable-371-Ser...
by 24Dave
Wed Jun 27, 2018 8:33 am
Forum: Journals: Log Your Ski Building Progress
Topic: WRONG 2017
Replies: 61
Views: 14012

hey Gav, the red board looks great! Regarding approach skis, We rode every approach ski - snowshoe variation we could think of for the decade before splits came out here in Utah in the mid 90s. If you are climbing and breaking trail in good snow they really make little sense. It is just too redundan...
by 24Dave
Fri Mar 23, 2018 8:05 am
Forum: Ski/Snowboard Design and Layup
Topic: Spoon bases?
Replies: 9
Views: 2413

2mm on a board, that's about perfect. My old mold made that, new one doesn't so base prep is easier. But that series of boards were all great.
by 24Dave
Fri Mar 23, 2018 7:59 am
Forum: Ski/Snowboard Design and Layup
Topic: Why not completely replace fiberglass with carbon?
Replies: 7
Views: 2464

I think an interesting all conditions upgrade to the 19 or 21 ounce triax might be like a layer of 4.7 ounce HS (high strength, not high modulus) Textreme carbon at 45/45 or 0/90 next to the core and 6 ounce unidirectional S glass or basalt lengthwise outside of that. Still might explode, but that's...
by 24Dave
Fri Mar 23, 2018 7:45 am
Forum: Ski/Snowboard Design and Layup
Topic: Why not completely replace fiberglass with carbon?
Replies: 7
Views: 2464

I've made heaps of powder boards in all carbon, but usually with stiff cores and tons of rocker. I love them. But I pick my days here in Utah, pretty much just riding fantastic backcountry conditions. On a normal profile core one problem that you may encounter is compressive failure of carbon on the...
by 24Dave
Thu Feb 08, 2018 10:39 am
Forum: Journals: Log Your Ski Building Progress
Topic: HB (Hansen Boards) 2018
Replies: 5
Views: 1821

really good looking topsheet work Akiwi, touring skis are really classy looking!
by 24Dave
Thu Dec 21, 2017 3:21 pm
Forum: Ski/Snowboard Design and Layup
Topic: soak in colour to/etch/stain/colour/dye veneer under vacuum
Replies: 6
Views: 1546

Dyed veneers shouldn't be too hard to find. I have some 36" long pieces from here http://www.dyed-veneer.com/dyed_veneers.aspx haven't used them yet but they look very nice, I have the blue, light blue and blue green colors, and some black to make pinlines. the grain on the koto wood looks great, si...
by 24Dave
Fri Dec 15, 2017 6:21 pm
Forum: Materials and Supplies
Topic: fiberglass and carbon proportions O_O!
Replies: 66
Views: 25470

FWIW, I agree with SA. If you are trying to lose weight with a carbon/glass layup and not get an overly stiff result, I would use carbon for your torsional stiffness and fiberglass in the O degree or longitudinal axis. You could cut your uni carbon in patches and lay it in on the +- 45 angles. Thin ...
by 24Dave
Fri Dec 15, 2017 5:49 pm
Forum: Ski/Snowboard Design and Layup
Topic: excess tip/tail epoxy vacuum press
Replies: 13
Views: 2862

Wvmtbiker- To answer your questions a bit back. I only do 3/4 edges, so just an inch or two beyond the contact points. Bends are so easy you could do with hands, I use the standard modified end cutters. I don't heat treat the metal at all. I superglue edges to base then bend over different radius PV...
by 24Dave
Mon Dec 04, 2017 11:53 am
Forum: Ski/Snowboard Design and Layup
Topic: excess tip/tail epoxy vacuum press
Replies: 13
Views: 2862

I vacuum press now only. A general concept for vacuum I think is to have all your pieces fit as perfect as you can have them and don't count on a lot of excess resin being squished out the same way as a pneumatic press. Try to use laminates that lay flat. spread resin on your fabric on a separate ta...