Simplex Studium

Thankfully, in these times where we can't help, we can help! The hospitals are in need of equipment. Our nurses, doctors and volunteers need our help! If you have a 3D printer, you can print facial shield holders which are actually really useful to all who are close to our infected fellow humans! One suggestion: https://www.thingiverse.com/thing:4240920 Several other suggestions: https://www.facebook.com/groups/1205752362782946/files/ Let's help!

At first, changing the filament was always a nightmare with this printer. The so called "cold pull"... Not too quick, not too slow... Well, it jammed more than it worked. So... I've done the following upgrade, making it easy to access the extruding block. It's basically a hinge with a magnetic lock. The contact between the heat sink and the extruder block is still guaranteed and the heat dissipation is practically as it was before the upgrade.

This is a fun puzzle to solve.  Has several mazes stacked on top of each other. Once one level is completed, the ball falls to the next level. The tricky part is that this should be solved blindly... You shouldn't be able to see the ball, just ear it and feel it as it goes through the maze.  Maps can be used to help the player, however, the maximum difficulty level for this puzzle is to mentally map the maze (no aid) and solve it just by feel, focus and dextrous movements. It can be seen and printed on Thingiverse here: https://www.thingiverse.com/thing:2771165

This is one of the first models in a series of simple ratchet mechanisms. To test their strength and functionality, it was included in the design an hexagonal slot for the standard 1/4" (6,4 mm) bits. It holds force quite well, however it needs some force to rotate the pawls. This model was published on Thingiverse ( https://www.thingiverse.com/thing:2213785) The shaft has a conical design to allow printing in one piece (although in this case it had to be separated in two), act as a bearing and hold some axial force. For future projects, already in tests, the ratchet mechanism will be printed in one single piece.