Search found 300 matches

by Head Monkey
Sat Feb 07, 2009 11:04 pm
Forum: Materials and Supplies
Topic: Quick PSA: overheating epoxy
Replies: 6
Views: 3945

Quick PSA: overheating epoxy

Just a quick reminder that extra epoxy should not be left in a small mass, but should be spread out to cure slowly. I mixed 50g of my normal QCM mix this afternoon to do a minor repair on a buddy's board. I used only about 5g of the epoxy on the board, and left the extra 45g in the cup. I meant to d...
by Head Monkey
Fri Jan 30, 2009 9:18 pm
Forum: Ski/Snowboard Design and Layup
Topic: piezoelectric fibers
Replies: 6
Views: 5083

I used to ride a K2 Electra 167. It was a nice board… I rode that thing into the ground. It delaminated multiple times and I kept getting it repaired just for grins. After that I rode many different boards before I started making my own. The Electra wasn’t even the best board in my quiver at that ti...
by Head Monkey
Fri Jan 30, 2009 9:03 pm
Forum: Ski/Snowboard Design and Layup
Topic: vaccum bag
Replies: 18
Views: 12178

It's true that you can attain 12.5 psi, but what you have to remember is that it's 12.5 psi over the entire pressed area where as a bladder produces its pressure over maybe a 3" wide section of cat track. That’s correct, it is 12.5 psi over the entire pressed area. I calculate the psi I get vi...
by Head Monkey
Thu Jan 29, 2009 11:26 pm
Forum: Ski/Snowboard Design and Layup
Topic: vaccum bag
Replies: 18
Views: 12178

Brewster wanted me to elaborate on my apparent dislike of vacuum bagging based on my statement in another thread: “IMO, a pneumatic press is so, so, so much better than bagging, but bagging is a great way to get started on the cheap.” I got started with vacuum bagging, and built boards that way for ...
by Head Monkey
Thu Jan 29, 2009 10:12 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Recurve Camber Snowboard Project
Replies: 32
Views: 21418

IMO, a pneumatic press is so, so, so much better than bagging, but bagging is a great way to get started on the cheap. Hi Mike, Just stumbled across this thread and was curious if you could elaborate on your dislike of the vacuum bagging system. Yes, I can elaborate. I’ll do it over in your thread ...
by Head Monkey
Thu Jan 29, 2009 9:50 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Komputer Numerically Kontrolled (KNK) Router
Replies: 48
Views: 30293

Very nice work man.
by Head Monkey
Sat Jan 24, 2009 9:47 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Trimming sidewalls
Replies: 3
Views: 3557

Trimming sidewalls

I was talking with doughboyshredder about this today, and I thought others might find it helpful. Every now and then I see people wondering how to trim their sidewalls, looking for special beveled bits, setting up complicated router table setups, etc. I find the simplest method is a laminate trimmer...
by Head Monkey
Sat Jan 24, 2009 9:20 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Cutting p-tex with a CNC
Replies: 3
Views: 2815

I run a 0.250” straight two flute carbide cutter at 23,000rpm at a feed rate of 50ipm. Works great. Do not use an up-cut spiral bit, for the love of all that is good and pure! I understand that I’ll get a better finish with a single flute bit, but I’ve never tried it… the two flute requires a little...
by Head Monkey
Tue Jan 13, 2009 1:10 pm
Forum: Journals: Log Your Ski Building Progress
Topic: The first one...........
Replies: 21
Views: 13937

For mold release I like SC Johnson Wax, original formula. Source: Home Depot and the like. Works like a champ. The Seattle area has fantastic sources of metal. I’m making a pickup from Alaskan Copper & Brass of new mold skins tomorrow in fact. Much cheaper. If you need random bits of metal, then...
by Head Monkey
Mon Jan 12, 2009 1:28 pm
Forum: Journals: Log Your Ski Building Progress
Topic: Recurve Camber Snowboard Project
Replies: 32
Views: 21418

It just occurred to me that the pics of my old vacuum setup that I provided Adroit707 might be useful for others who are doing bagging. They’re all in one directory here, and they’re all really big… I recommend a bulk-download via FTP: http://www.happymonkeysnowboards.com/HMS/wp-content/gallery/oldv...
by Head Monkey
Fri Oct 31, 2008 10:45 pm
Forum: Materials and Supplies
Topic: Resin impregnated cloth... and pop
Replies: 12
Views: 8770

There are two different things out there: “precure" and “prepreg”. Precure , which is what I’m guessing you’re asking about Nick (Outlook is autocorrecting “precure" to “procure” for me, too :)), is a glass laminate that is impregnated with resin and cured under pressure and tension . You ...
by Head Monkey
Thu Apr 10, 2008 11:26 pm
Forum: Journals: Log Your Ski Building Progress
Topic: ON3P Skis
Replies: 167
Views: 159096

I would recommend being careful selling anything you build to anyone but very close friends. Unfortunately, injury and money can turn friends into enemies all to easily. If you are going to start selling to people beyond your close set of friends, then you’ll want to consider either a corporation (l...
by Head Monkey
Wed Dec 05, 2007 11:40 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Quick and Dirty mdf cnc machine
Replies: 10
Views: 10250

You’re right that you’ll be limited in motor size by the current your drivers can support. I did use Gecko Drives, G201’s I think. They work very, very well… I highly recommend them. I admire your drive to build these yourself… very cool. I can’t wait to see your machine go! And I forgot about the p...
by Head Monkey
Mon Dec 03, 2007 11:55 pm
Forum: Equipment and Tools (e.g., ski press, core profiler, etc)
Topic: Quick and Dirty mdf cnc machine
Replies: 10
Views: 10250

G-man, I’d like to suggest that you use larger motors. I used steppers with 680 oz-in of holding force for my X and Y axes, and 228 oz-in for the Z axis. A stepper motor has its greatest holding force when motionless, and I can overcome the holding force on either axis without too much effort by pus...
by Head Monkey
Wed Nov 21, 2007 7:11 pm
Forum: Aprés Ski Building
Topic: SkiBuilders' Convention: Whistler, BC, Feb. 16/17, 2008
Replies: 25
Views: 24128

Turns out I already have a Whistler trip planned for late February: 2/24/08 thru 3/1/08. If it happens that you organize this during that time frame, then cool. If not, I’ll catch you guys next year.