Shaping surfboard wood: the parallel profile Rampant 10-5

Here shaping continues on the Rampant 10'5" paulownia wood surfboard, this time the secondary rail facets are added ( now that the first facet has been faired) first with a belt sander and then with a hand sanding block.

Light falling on the rail shows the facet progression. The topmost second facet is done later, after the deck is sanded and faired.

Wooden surfboard rail facets

The first facet on the lower rail radius is much smaller, and a tucked edge will remain adjacent to the bottom:

Roy Stuart shaping

Bricks are used to keep the surfboard in place on the shaping stand.

Elliptical round tail surfboard shape

Surfboard rocker on parallel profile blank

As the top of the rail curves in to the deck it produces a subtle 'S' deck and a 'boat tail' shape reminiscent of 1930's planing 'runabout' and 'commuter' power boats.

Boat tail and S deck surfboard design

'Rampant' appears to have a reverse rocker in the last 18 inches of the tail. This is an optical illusion created by the intersection of the elliptical planshape and the concave ( which diminishes to a flat section in this area in order to keep the inlet and outlet volume of the tunnel fin withing acceptable limits. Adding lift to the tunnel fin increases the outlet volume).

Single concave surfboard hull subtleties