#video on designing a clip for a “threadboard” made by #3D-printing, including concerns about layer adhesion, friction, and swivel #print-in-place #mechanisms
on 02024-09-13#Malawey #video on #precision #mechanisms with #3D-printing: “Borrow a Tolerance!” Lots of wisdom about mechanical engineering and which industrial #manufacturing processes have which drawbacks. He shows a 3-D printed collet as one example of a non-borrowed good tolerance. Demonstrates some 3-D printed springs in I guess ABS, but says you can “borrow a [precision] spring rate” from a spring-steel binder clip, which also doesn’t creep at “any temperature a human can survive”. Borrowing smoothness and toughness from HDPE tubing (from water systems) to make hinges; he sharpens it in a pencil sharpener to get it to go through his #print-in-place hinges more easily. His print-in-place approach has support material between parallel horizontal layers which must be broken free with a spatula or hammer.
on 02024-08-27#3D-printing #video on #print-in-place #flexures #mechanisms that shoot a toothpick
on 02024-06-10