Printrbot LC Z Stop Dial
by Eckerput, published
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The "customize" parametric model didn't work for me - it left an open space in the knob part and then started extruding the shaft into thin air after some number of layers. I had increased the knob thickness and shaft length. (This sounds dirty as I read it....)
Nice. It would be nice not to have it wobble so much. Any idea if this will fit an LC? You have LC+ if I recall.
I put an optical stop on my Printrbot. with that I really needed to hold the Z stop bolt better as any wiggle causes the optical stop to change. so i made this thing: http://www.thingiverse.com/thi... . I have a micrometer head coming that will replace the knob so that I can precisely adjust the Z stop length have a graduated reading of its position.
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I printed the stl using normal 40% infill. You will probably need cooling as the long shaft prints fast. While the print is printing, cut the head off of a 2 inch 6-32 screw. Once printed, insert the cut end of the screw into the hollow end of the knob. You may be able to just screw it in with pliers, or you may need to drill it out a bit, or glue in the screw depending on your print quality. You can remove and replace the existing 6-32 z stop screw with your new one. I find it helpful to mark the top with a Sharpie so I know how far I turn it. From my calculations, each revolution of the knob should move the z axis stop about 0.79 mm.
Update: added a second version with a thicker knurled knob if that fit's your design better.
Update: Per Michele31415's concept a dial with a pointer has been added.
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