3D Printing Projects 202507 – 1-2-3 Block and Fasteners

Posted on by

I wanted a simple but not trivial visual aid for the Onshape class and stumbled upon the 123 block as a nice prismatic practice piece. Pattering the holes got to be more involved than anyone imagined. Very good exercise for Oshape.

Utilizing an internet seach a drawing of a 123 block was found.

It would be nice to have fasteners to connect blocks together. To make stong threads the thread forms are printed in the XY orientation. The head was separated from the whole screw to form a T handle on the threaded portion and part of the hex socket for maximum torque. The head was then relocated for better printing orientation and a tree was added to hold them together until assembled. Configurations were established to make length selection easy.

1-2-3 blocks in holders in the Grid Finity system. Various fasterners and T-wrenches of the style described.
A body and head as it would be in the printed orientation. The threads in the x-y plane offer the best strength. the knurled part of the head is also strong in this orientation. The flats on the threaded body allow for no supports needed to print. THe head is attached via some small strips to keep the two pieces as one until needed.
A close-up of the nests and the grid finity base
grid.

Parts were printed in PLA on the Ender3 V3 KE, Speedy-G and Tres (the 1st and 3rd refurbed KE in the lineup). The nests were printed in two color layers on the FF AD5X.Gridfinity base grids where printed on the Lost Cuz.

Leave a Reply

Your email address will not be published. Required fields are marked *