Search found 300 matches

by Head Monkey
Wed Nov 25, 2009 6:17 pm
Forum: Ski/Snowboard Design and Layup
Topic: Epoxy squeeze out in a vacuum - does it happen
Replies: 12
Views: 8190

Numpty, On your first question, it’s been a long, long time since that picture was taken. I don’t actually know whether I was done with wetting the top glass, or had simply stepped back briefly to let the picture be taken in the middle of wetting it. You’d like to see your glass go translucent when ...
by Head Monkey
Wed Nov 25, 2009 3:49 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: tempering vs heated press
Replies: 3
Views: 2172

Heat is always better, even for epoxies designed for a room temp cure. When I vacuum bagged I actually built a “hot box”. You can see it in the pics here: http://www.happymonkeysnowboards.com/mike/OldVacuumBagging/ I made this out of 2x4’s, drywall, and foam insulation in between, essentially just l...
by Head Monkey
Wed Nov 25, 2009 3:37 pm
Forum: Ski/Snowboard Design and Layup
Topic: Epoxy squeeze out in a vacuum - does it happen
Replies: 12
Views: 8190

Twizzstyle’s right on here: it’s the much lower pressure you get with vacuum bagging yielding poor squeeze out that’s your biggest problem, so you need to be much, much more careful about where you put your epoxy. A capped top sheet doesn’t help matters, either, since you are correct that there is p...
by Head Monkey
Wed Nov 25, 2009 3:28 pm
Forum: Ski/Snowboard Design and Layup
Topic: how much edge must be covered by the core?
Replies: 4
Views: 2462

I used to use a 45 degree bevel when I made cap snowboards with vacuum bagging. Is it “enough”? Kinda depends… the edges of those boards held up very well to everything but rails. A good hard hit on a rail, though, and it would delam. Only delams I’ve ever had. With a sidewall board I’ve never had t...
by Head Monkey
Tue Nov 17, 2009 10:16 pm
Forum: Ski/Snowboard Design and Layup
Topic: Running length vs effective edge - conversion
Replies: 45
Views: 26181

Here you go: http://mathworld.wolfram.com/CircularSegment.html I think that with a tiny bit of discussion you’ll find that you can get a reasonable group of people to agree what these two terms should mean. Unfortunately, that doesn’t mean anyone else in the industry agrees with you. You will contin...
by Head Monkey
Sat Nov 07, 2009 10:58 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: My Edge Bender
Replies: 34
Views: 68142

Very nice work!
by Head Monkey
Thu Nov 05, 2009 6:16 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: New press - Mongo style !
Replies: 49
Views: 44942

For my mold skins I use 0.032" 5052-H32 aluminum, straight from the metal supplier. If you're in the Seattle area, that's Alaskan Copper & Brass. They'll shear it to width for you. This conforms to my molds just fine... sure, a little relaxation afterwards, but not much.

Hope that helps.
by Head Monkey
Sun Sep 20, 2009 9:23 am
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: new molds questions
Replies: 8
Views: 3387

I’ve done it… once. I cut an entire mold, including nose/tail blocks out of one big glued up block of MDF. I still build my molds by cutting 21 pieces and bolting them together :) It’s faster, and has acceptable accuracy. It’s a time/accuracy tradeoff, or a money/accuracy tradeoff if you’re contract...
by Head Monkey
Mon Sep 14, 2009 5:42 pm
Forum: Ski/Snowboard Design and Layup
Topic: polyurathane glue as core glue up
Replies: 5
Views: 4060

Re: polyurathane glue as core glue up

skidesmond wrote: One thing I like about is if you dampen the wood very lightly and then do the glue it, the glue expands to fill any voids.
Yes, it will, but it is _not_ structural.
by Head Monkey
Fri Sep 11, 2009 9:57 pm
Forum: Ski/Snowboard Design and Layup
Topic: polyurathane glue as core glue up
Replies: 5
Views: 4060

Your core glue doesn't need to be waterproof. It's only purpose is to hold the core together until you get the board laminated. Your glue choice should be dominated, then, by other useful properties, like open working time. Polyuerthane glue has a nice long open time, and is perfect for this. I use ...
by Head Monkey
Mon Aug 31, 2009 2:00 pm
Forum: Ski/Snowboard Design and Layup
Topic: base movement
Replies: 6
Views: 4309

http://solutions.3m.com/wps/portal/3M/en_US/3M-Super-77/Super77/SprayAdhesive/Product-Information/ I'll assume an aluminum mold skin here. Leave a thin strip, anywhere from 1-3" wide and a good 12" from each end of the board, on your mold skin without wax (or whatever release agent you use...
by Head Monkey
Fri Aug 28, 2009 5:24 pm
Forum: Journals: Log Your Ski Building Progress
Topic: OH NO!
Replies: 7
Views: 5717

Nice work... that looks way better in the end than I expected it to when I started reading :) I've heard of people doing this to repair especially deep base gouges, but never done it myself. Cool...
by Head Monkey
Sun Aug 09, 2009 8:09 pm
Forum: Aprés Ski Building
Topic: Fontaine ski tuning equipment
Replies: 4
Views: 7026

I have a Fontaine base grinder, model 1404. Fontaine is (was?) a US manufacturer that, for a while, made machines over here for Wintersteiger. My machine was actually sold by Wintersteiger as model SNB 55. The manual that I have suggests the following address for the manufacturer: 200 27th St. Sacra...
by Head Monkey
Mon May 04, 2009 5:50 pm
Forum: Aprés Ski Building
Topic: Washington builders get together
Replies: 26
Views: 14093

Yea, turnout was weak, both from sb.com and ss.com. Kelvin and I were the only ones from here... we had a good time chatting about building and whatnot. He brought up a whole bunch of extra material he was willing to pass out, and I brought up a groovy prototype core for show-and-tell. Too bad we mi...