Hand Spinner béton

https://youtu.be/Y_OUum_W2F4

" automatic translation : "
Feature :
The masses distributed away from the axis do not form a hardening liquid to be poured into the recess of the main body. The single recess is symmetrical with respect to the center of the bearing.

Here, the mass is ensured by a mixture of fine sand and cement metered at 50%, moistened for slow drying.

operations:

1 Print without support
2 Check the bearing and the lid, if necessary, deburr or sanding.
3 place the body on a flat support and pour the binder without going over the notches on each side of the bearing.

4! Safety: check that there is no friable material that could injure the eyes of the user.
Here cleaning and adding a varnish (or paint) to consolidate the surface of the binder.

6 Place bearing after cleaning parts
7 Close the cover 4 screws
8 Place the center pin in the bearing

equipment:
See pictures (the screws are recovered for example on plastic objects that are thrown)