Hole diameter test M3/M4
myminifactory
This model was designed to test the snugness of M3/M4 screws within holes of my 3D printed creations. The holes have diameters ranging from 2.6 to 4.3 millimeters. I discovered that an ideal hole diameter for M3 screws is 2.9-3.0 if a secure fit is desired, though every 3D printer has its own unique deviations.
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