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Surfboards Composites CAD

XPS Performance Fish

SolidWorks-designed performance fish with cotton fabric inlay — July 2021

Board Design

With leftover materials from the XPS shortboard build and a desire for a board better suited to New England's often lackluster surf, I set out on a performance fish. Inspired by Pyzel's Astro Pop model, all design work was done in SolidWorks.

To avoid the glue seam issues that plagued the first build, I modelled the cross-section carefully so the seam between blank pieces would fall at a depth corresponding to standard 2×4 dimensions — keeping it hidden within the board rather than appearing on deck or bottom.

SolidWorks render
SolidWorks model
Outline template
Outline template
Rocker template
Rocker template
Blank rocker template
Blank rocker template (accounts for glue seam placement)

Build

Lamination drying
Lamination drying
Finished board
Finished board (paint removed on lower half for traction pad)
Dimensions
Final dimensions

Lessons Learned

Cotton fabric inlays take significantly more resin to saturate than expected — I ran so low on resin that I had to drop to two layers of fiberglass on the deck instead of three. The board is still plenty strong with no pressure dings after ~10 outings.

Ride Report

A wave-catching machine. I do wish it had a bit more volume in the tail — it can drag in very weak surf — but the shape works beautifully in anything with a pulse.

On my first session someone stopped me and said "that looks like a really fun shape." In ~15 years of surfing, that had never happened with any board I'd ridden, professionally built or otherwise.