by fossilgrom » Wed Sep 16, 2009 10:30 am
I guess I'll start with some basics that I've found work.
Materials:
1. I've been using cedar - clear grain is best. Try to avoid knots as they are a bi tch to shape around. 1x6 to 1x12. I've been using a 1x8 center and 1x6 on the sides.
2. Gorilla Glue works good for joining - get the water proof stuff. I have been keying the joints on my table saw with some 1/8" birch plywood (about 1 1/2" strip), but you could probably get away with a simple butt joint as gorilla glue is pretty strong shite.
3. You could do the whole thing with hand tools, but a belt sander, orbital sander, jig saw and table saw are real handy. You'll need sandpaper from 80 grit to about 220 grit.
4. for finish use a 50/50 mixture of boiled linseed oil and turpentine.
Design:
1. Flex - the boards have no rocker so the flex is the rocker. Riding prone you push down on the nose to give the board reverse rocker when catching the wave. As you make the drop you pull back on the nose giving you entry rocker. As you trim you can flatten the rocker again for speed. You should make the board thin enough that you can flex it, but not so thin it will break easily - less than 3/4" to about 1/2 inch thick.
2. Rails - It looks like a lot of people are using kinda knifey rails. I looked hard at pictures of what the Wegener Bros are doing. They appear to be leaving a hard rail all the way around top and bottom. The rail is about 3/8" thick and slightly turned under like this _) . My best handling boards have this type rail so I think I'm close.
3. Bottom - It appears that flat to concave works best, but you should leave about a 3 to 4 inch rolled taper to the rail. I tried some vee bottoms and full rolled bottoms, but they felt slower and not as fun. My best handling board so far has a slight concave through tha back half to almost flat in front and rolls off to the rails.
4. Outline template - I've found a parabolic shape seems to work better than a simple rounded nose. I think the changing curve helps the board turn better. I'm an engineer so I have access to autocad and can draw up templates and plot them out. Just draw a surfboard shape that appeals to you and keep it symetric. One thing I have found is the shorter they are the better they work - 6 to 7 feet long, 15 to 18 inches wide seems to work.
Construction and Shaping:
1. Get your wood and glue up your blank. I used some 2x6s with clamps to hold them flat and them used straps to clamp the 1xs together on edge.
2. Rough sand the blank to get rid of glue etc. Draw out your outline from your template and cut it out.
3. Rough shape the rails edge I used a belt sander to do this.
4. Shape in your concave and rail roll. I did this by eye keeping both side as even as possible. I found those chese grader rasps work well for shaping, but you can also use a plane or belt sander.
5. Once you got it looking like you want it, sand it smooth as you can down to 220 grit.
6. oil that thing.
7. go surfing.
Total cost for your first one will be about $100. The price goes down after that cuz you'll have the tools, glue etc.
free your mind, your @ss will follow