Preamble: I have NOT tested it yet. It would be awesome if someone going to the beach could print it and give feedback.
I designed this in Fusion 360 using parameters so if it is too big I can make adjustments
FUNCTION: Fill the top of it with wet sand. When you push the outside it should ‘extrude’ a sand castle wall.
Extendo: In case the base extruder, is too small I've included an ‘extender’ which should give you more space for sand. They should be stackable in 6-inch increments.
Future: I may want to add a plunger if the wet sand clumps too much and gravity doesn't work as expected.
The author marked this model as their own original creation.