OT: Boardroom Show? Anyone going from ST?

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Gunkie

Trad climber

Valles Marineris

Topic Author's Original Post - May 1, 2016 - 09:32am PT

Anyone going to the Boardroom Show @ Del Mar (CA) fairgrounds MAY 14/15? Definitely off-topic as the Boardroom Show is about building surf craft. I should be there in the afternoons, surfing in the mornings.

http://www.boardroomshow.com/

Contractor

Boulder climber

May 1, 2016 - 12:49pm PT

I think I'm going to check out the show this year and see what's trending. I haven't been in years but I've definitely been inspired by things I've seen there in the past. It'll be intersting to see how things have changed in the industry in the last 5 years. Of course, as in climbing, there will be droves of old codgers there looking for a good argument- that never changes.

I was motivated to design my own quiver by being ultra anal about my boards and the lack of consistency from some shapers. These boards were designed and refined on a home computer, cut by machine and test ridden by my son and myself. It's taken 9 years to fill out this quiver, exactly the way I wanted, starting from scratch and having never shaped or designed a board. The 7-6 mini gun is the only hold out, designed by Mann Kind- I can't let this one go.

Tom

Big Wall climber

San Luis Obispo CA

May 1, 2016 - 03:31pm PT

Contractor, was the final 3-D shape (rocker, taper, etc.) cut with a machine, or just the profile?

Contractor

Boulder climber

May 1, 2016 - 04:29pm PT

Hi Tom,

The software allows the designer to manipulate separately with control points the:

Rocker at the stringer, in horizontal profile.

Outline in horizontal profile.

Multiple cross-sections in horizontal profile.

In later versions of "Shape 3D", the board can be viewed in 3D as a wire frame or solid with simulated lighting.

The big sea change came with "re-sizing", which allows the designer to take a shape for a 98 pound kid and with the stroke of a few keys, proportionally upsize the board for a 230-pound man.

This led to online orders of mass produced semi-custom board models by Rusty and Channel Islands. Because of resizing and the ease of adding volume to different parts of the board, people have been ordering boards based on volume in liters, as much as length and width.

Once the board file is completed it can be emailed to a cut shop. The cut shop will select a blank that fits your design, load it onto a carriage and cut the board in two phases within a hundredth of an inch.

The board files work as Word documents in a sense, in that they can be "saved", "saved as", or "copied".

The last part is a light sanding of the cut blank that takes about 20 minutes, then mark the fins out.

The software is a free online download (Shape 3D).

Of coarse there are guys out there that can do all of this by hand in about 45 minutes- that's amazing to me.

Sorry- the short answer is the machine cuts the entire board.

Tom

Big Wall climber

San Luis Obispo CA

May 1, 2016 - 08:36pm PT

I get it now.

The software is analogous to AutoCAD. The drawing has specific parameters (stringer rocker, outline, discrete cross-sections).

The machine cuts the blank, and then it's flipped over to get the other side. The machine roughs it out, requiring some final sanding.

Do you use epoxy or polyester resin, these days?

Does anybody use a fiberglass torsion box beam for the stringer, with the fibers going +/-45 degrees to the main axis? That is how Burt Rutan designed the wings of his fiberglass airplanes. The box beam wing spar greatly increases stiffness and strength.

Contractor

Boulder climber

May 1, 2016 - 09:11pm PT

I'd think it's an offshoot of boat hull design software.

You have to fight the impulse to over design and add too many guide points or slices. The true power of the program is hidden in how it harmonizes between curves, convex, and hard points.

They're using cross laminate ply stringers but not in a box form, at least not in the shorter boards. Short boards need to load and rebound like a golf club and the original polyurethane blanks and glass jobs have a nice combination of flex and strength.

I could see the box stringer working in a paddle race board or especially as a keel in a small boat where weight and strength are key and rebound isn't an issue.