Printrbot Jr. Z Stabilizer
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Published on March 9, 2013
Description
If your layers are giving you trouble, try this.
EDIT 03 10 13
As brought up by reeseallen, this item is not to take out Z free end wobble.
Also, there is no substitution for proper care and maintenance of your printer. YMMV
EDIT 03 10 13
As brought up by reeseallen, this item is not to take out Z free end wobble.
Also, there is no substitution for proper care and maintenance of your printer. YMMV
Instructions
Designed and printed with a .35 nozzle in mind. Works with a 608 skate bearing and leftovers from your assembled Jr.
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License
Printrbot Jr. Z Stabilizer by lscs is licensed under the Attribution - Share Alike - Creative Commons license.
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I hate to be the bearer of bad news, but this is actually a counterproductive modification. It over-constrains your machine and imparts unnecessary radial stress on your Z-axis stepper motor and bearings. The four Z-axis bearings do all the work of linearly guiding your
printer's Z-axis motion; the screw's only job should be to push the sled
up and down. If the end of your Z screw is wobbling around, that is not a problem, and it should be allowed to wobble freely.
This is true only on a perfect machine. Wood compress over time and slowly reduces the tight tolerances. Or, a larger issue, bent thread rod.
This, I my case, translated into head wobble and Z layer pattern. There is also more going on than what the picture shows.
But you bring up a good point. This is not for a new, properly set up machine nor is to take out Z free end wobble.