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This is an attempt to make a modular toy for the kids and people that feel that way.

This is version 2.0, made few for kids and they love it (not the one from the video, that is just for demonstration), the bottom tray part is optional.

Please don't judge the lack of ergonomics, rounded or chamfered edges are intentionally avoided to make a better and faster prints, I usually print only industrial stuff (AND STUPID BENCHIES).

Native scale is made to be printed on common small work surface printers.

You can scale it up if possible for more fun.(please share photos/vids!)

You can try to stack it up one on top of another as it is intended to be modular. ( haven't tried, please share photos/vids!)

My print details:

The shaft is stainless steel rod cut to length and with chamfered edges. You can buy it polished or polish it with locking in a drill chuck. You can print the plastic one but it could have more resistance if not printed properly. You can also use a plastic rod of some kind

For low spinning resistance the wheel needs to be adapted for the shaft. You can size the printed hole with a drill (5-5.2mm drill bit) and then spin the shaft inside.

The shaft/frame connection should be tight so you can also drill that to 5mm and press it in.

Use superglue for joining the rest of the parts together.

Parts List:

FRAME 1
FRAME 2
FRAME 3
TRAY
SHAFT STOPPER
WHEEL 1
WHEEL 2
WASHER (2x)(OR STAINLESS STEEL SHIM WASHER DIN988) - not necessary
SHAFT DIAMETER 5mm, 60mm LONG, STAINLESS STEEL OR PLASTIC

If you like this design feel free to leave a tip, I accept crypto also. thanks

just the water wheel LEGO compatible
https://www.thingiverse.com/thing:4918527

my other designs
https://www.thingiverse.com/thesloppyapprentice/designs