Hinge Printable As An Assembled Unit Without Supports

by profhankd, published

Hinge Printable As An Assembled Unit Without Supports by profhankd May 2, 2013

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Here's a simple hinge design that does not violate the 45 degree overhang limit rule -- no spans either. The hinge mechanism uses conical pins on the narrow fingers mating with conical hollows in the thick fingers. This makes a very cleanly operating hinge which goes between a flat 180 and 90 degree positions, and is easy to print.

For now, this is just a test/demo using the customizer; a more parametric version is coming....


The test print shown was made in black PLA using a MakerGear M2 with a 0.25mm diameter extrusion and 25% fill in the larger flat regions. The part is 6.35mm (1/4 inch) thick with a 0.4mm gap between the separate parts printed assembled. There is only a little force needed to smoothly operate the hinge, although it will hold an open position; if yours operates rougher or sticks, consider using a larger gap setting.

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The minimum thickness theoretically would be about 5 times the max(layer thickness, gap), but I printed it much thicker than that and thicker is better. The demo has the flat plates just stuck on; I'll fix those so they scale later. The STL file and hinge() module in the SCAD file should be fully scalable.

That thing trying to go out of my head about a month..
Tell plz how thick can be this thing?