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Build a Surfboard Episode 1: Shaping

Step 12The Rails

The Rails
The "rails" are the edges of the board. They determine how the board grips the wave and how much the water wants to stick to the board or release cleanly. A "hard rail" has a sharp square edge at the bottom. The flow releases cleanly, but the board doesn't stick to the wave enough. A "soft rail" is one that's round, with no corner at the bottom. The board sticks to the wave well, but the flow gets sucked around it, making the board slow. This board will have a "tucked rail". That's an overhanging rounded rail with a sharp edge underneath.

Shaping starts by cutting bevels.
There are two bevels, the top one, which fades into the "crown", or flat part on the deck, and the bottom bevel, which should be a 45 degree bevel. The bevels are cut before the nose is taken down, so they run the whole length of the board. The flat part, remaining from the edge of the blank is called the template band and continues to exist as a reference for the rest of the edge shaping.

He says: "Make your bottom bevel 1/2" wide. I'm making this one 3/4" wide because I know how to make it work. You shouldn't go over 1/2".

The first photo shows the bottom bevel. The next shows the crown bevel.
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Author:TimAnderson
Tim Anderson is the author of the "Heirloom Technology" column in Make Magazine. He is co-founder of www.zcorp.com, manufacturers of "3D Printer" output devices. His detailed drawings of traditional ...
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