[EDIT}: please reload the file, there was a mistake on the backside text in the initial file: it was protruding instead of a recess. It is fixed now.
This is the evolution of my first robot hand (https://www.printables.com/model/640043-robot-hand-print-in-place-tightenable).
The joints have been improved from the gen #2 joints (this is my gen #6): they are now
I havent used my #5 generation joints (like the spider) because 1/ i dont want the parts to turn 90° (for aestetics) and 2/ i want to be able to retighten the joints when they get loose.
I have also tried to improve the overall look of the hand. Trying to come closer to the uncanny valley.
Prints in 5h on bambulab p1s, standard 0.2 profile. Gaps are designed for 0.2 layers and 0.4 nozzle. No brim, no support.
remove the built in support under the thumb second joint. Then tighten all the joints. There are 2 small arrows on the joint to remind in which direction to turn the wheel. Here is a quick video to explain the process:
Silk pla: everything works perfectly with normal pla, but silk pla gives me a hard time with this model. If you want to print it with silk pla anyway, read the following.
Some silk pla are too soft and the wheel may break when tightening. If this happens:
I had a hard time with silk pla warping and small parts flying off the plate, so i redesigned these parts to stick on the plate, at the cost of being a little more bulky, but that’s ok. Also, for silk pla, honey comb infill pattern gives better surface quality results than the default.
If you cant print the wheels properly, try https://www.printables.com/model/1136270-hand-v21
PLEASE LIKE, COMMENT, POST YOUR MAKES. THANKS!
NEW: If you want to sell the prints of this model, you can subscribe a commercial licence to my club.
The author marked this model as their own original creation.