Tetrapod & tetrapod mould - Concrete armour unit - Breakwave

Tetrapod is the popular shape used to make breakwaves. Already seen on thingiverse, I just needed to redraw the exact geometry so the 3D model is also available here.

From that I made a mould that one can stuff with concrete. Make it quite liquid & push, stirr, with a metal wire.
Print three identical parts and assemble the mould with 3 M5 bolts. might work with clamps.

If not resized, the tetrapod will be around 30mm high.

Enjoy
Please post your makes

Here are my other concrete blocks for breakwaves
Accropode
https://www.thingiverse.com/thing:2328727

Tetrapode
https://www.thingiverse.com/thing:2324210

Core-loc
https://www.thingiverse.com/thing:4825866

Cubipod
https://www.thingiverse.com/thing:4825904

Dolos n°50
https://www.thingiverse.com/thing:4825877

Xblock 4,5m3
https://www.thingiverse.com/thing:4826627