Hinge for 3D Printing Only
grabcad
A universal joint hinge assembly that can only be 3D printed. Attach parts to the hinges using the snap fit undercut or embedded nut. You can also route fluid through the hinge pins! Some injection molding rules that I violated: 1) Maintain equal wall thicknesses (all pieces) 2) No thick cross sections (hinge body) 3) No undercuts (shown in red) 4) No negative draft angles (shown in yellow) The spherical hinge pin body was drawn as a solid to highlight unequal wall thicknesses, but it could also be drawn hollow and 3D printed clear to highlight the fluid path.
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