1 Topic by accusedmonk

  • accusedmonk
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  • Registered: 2013-10-22
  • Posts: 253

Topic: Z banding/wobble returned, now fixed

Shortly after installing my m3 Z axis rod, the banding that went away came back.  Finally after pouring over threads here, and watching this video specifically: https://www.youtube.com/watch?v=Ix8PHHisDuw, I have solved my issue with z banding/wobble.

Turns out that my m3 and coupler didn't flex as much as I thought they would to compensate for any flaws.  It was still stiff enough to flex the bed with at least the tolerance of the bushings.

This is the coupler, all I did was get them hand tight and backed off a bit.  I did add some lithium grease for good measure.

http://i.imgur.com/IGT6LFp.jpg

Here is what the issue looked like on every print:

http://i.imgur.com/PSVaK4d.jpg

Now after letting the bed just rest on the bottom of my nut trap:

http://i.imgur.com/n7kIJSV.jpg?1

Bowden SD3, Rumba, E3D hotend, Mk5 with RtRyder changes, Direct drive Y axis and bearings, GT2 pulleys and braided fishing line, Lawsy linear bearing conversion, M3 Z screw.

2 Reply by accusedmonk

  • accusedmonk
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  • Registered: 2013-10-22
  • Posts: 253

Re: Z banding/wobble returned, now fixed

Here is a good comparison of what consistent layers can do.  This is before and then after.

http://i.imgur.com/tCxYwoP.jpg

Bowden SD3, Rumba, E3D hotend, Mk5 with RtRyder changes, Direct drive Y axis and bearings, GT2 pulleys and braided fishing line, Lawsy linear bearing conversion, M3 Z screw.