Bidirectional Bolt (Left and Right Hand Thread)
myminifactory
This is a bolt that accepts both right and left hand threads. This is a model of the bolt from Олег Певцов athttps://www.youtube.com/watch?v=cDfMI5ahbJI I made the model with a 0.4 mm radial allowance on the nut. The inventor files are included in case you need to adjust this to match the accuracy of your printer. This large m42 bolt can also be printed at 50% scale. Print a mirrored version of the right hand threaded nut to get a left hand thread. I printed with no supports, 3 perimeters and a 50% infill at 0.10 mm layers. Not for structural use!
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