Mini ish Cryptex (improved design)
Description
I have only printed in PLA if you print in ABS please report how well the lock ring works.
Instructions
5 spacers
5 ring 2's
one inner tube
one support tube
one locking ring
and as many shims as you need. ( i printed the whole set and only used 2)
one "pins"
Program by aligning the notch in ring 2 with your selected letter.
to
don't glue the pins on the inner tube until you have every thing assembled so you can find the best alignment.
once printed i sand the sides of the ring 2, spacer rings and letter rings (ring 1s) to make it operate smoother.
depending on how much you shim and how much you sand you may need to file the teeth of the pin to get everything to line up right. i had to on the orginal design but this one i did not.
you can use a sharpy to color in the letters, then hit them with some white glue then color again for good sharp letters.
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Printed it with PLA, scaled 112%. Works like a charm, no need to file or sand anything. I added a 1mm shim. Thank you for this design !
I have confirmed that all my problems were due to the slic3r calibration. . . it appears that everybody who owns a MakerGear M2 ends up needing an extruder multiplier of 0.867, suggesting a likely miscalibration in the M2's firmware. With the slic3r fix, all parts fit together as advertised!
Thanks for the tip. . . I'll have to remember that one for future use. As for the sizing, I'm pretty sure it's a slic3r issue but I will need to do some testing to figure out if it is as simple as changing the nozzle diameter setting. The dimensional errors seem to be too large, larger than the nozzle diameter itself. All the rings stacked together came out something like 4 to 5 mm longer than fits comfortably on the outer tube, which means an error in the Z dimension of approximately 0.5mm per piece. This is far too much error for the pins to fit in either direction, so I had to cut them back. Fortunately, the whole design is quite robust and so I was able to get it working smoothly in the end. A lot of grinding and sanding, but it's a real working cryptex!
By the way, you need to watch your auto-correct, or you may end up with anti-Semitic pins (instead of asymmetric)!
You have to hit it with white glue (PVA) glue before shapie to prevent the bleeding. As far as size count be nozzle size too slic3r is crazy like that. I printed using a well calibrated Mendel max with a 0.5 nozzle and default extrusion widths if I remember right the pins are not Semitic you have to put in on both ways and find the best fit.
I printed in PLA but also had to do a lot of "sanding and dremel work" before it would fit together without binding. I'm wondering if this indicates that I need serious adjustments to my slicer settings. Or perhaps it's that not all slicers are created equal. I used slic3r with reasonably sane settings, and everything comes out much too tight. Not only did I not need shims, but I had to cut the hole for the lock ring wider by about 2mm. I could not get a Sharpie to work well so I painted the letters in with gloss black enamel paint using a toothpick. The paint (and the marker, for that matter) bleeds into the plastic, but it's "good enough for government work", as the saying goes.
I printed mine in ABS and it took some considerable sanding and dremel work but it slides pretty well now.
License
No worries Glad it is working for you guys!!!!