Unlimbited Phoenix Hand tensioner box and pins
thingiverse
**TENSIONER BOX** I redesigned the tensioner box in Fusion360 to achieve a smoother and more refined mesh. The Fusion360 source file is scaled 100%.     I am not satisfied with the original design of the tensioner pin because it is flawed when printing the "threading ribs". Here is a section of the hole:  The highlighted features cannot be successfully printed without support:  I modified the hole section to make it easier to print without supports:  Then I conducted several tests to determine the correct interference between screw and thread. I found that for an M3 screw, 2.7 mm is the optimal diameter. This value must be adjusted in the sketch named **interference** in the Fusion360 file. The file is scaled 100%. If you need to increase the scale in the slicer, you should decrease the interference diameter to maintain the correct interference once printed:   Then I tested that the interference is sufficient to bear weight. Up to **two kilograms** are acceptable:   
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