Surfboard Fin Reproduction

Fins are performance parts under real load, and printed layer lines behave differently to moulded fibreglass — so we class these as experimental. For a beater board or a temporary fix they can work well; for your good board, buy the proper fin. We'll tell you which side of that line your use case falls on.

Why these break

Fins snap on rocks and shallow banks. Heat cycling is the killer here: years of expanding and contracting work-hardens the plastic until a routine bump becomes the final straw.

How we reproduce them

This is a genuine reverse-engineering job: we scan or measure your part, rebuild it in CAD, and iterate test fits until it's right. Worth it for parts you simply cannot buy anymore.

We print these in PA-CF. Carbon-fibre nylon is the strongest material we run — it goes into parts that carry real load, where a lesser plastic would be the next thing to break.

As with everything in our library: whether a part can be reproduced depends on size, load, heat, material, and having a decent sample to work from. Send photos first — the assessment costs you nothing, and we'll tell you honestly if a genuine spare is the better option.