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Posted (edited) · Banding on z axis

That looks like the dreaded Z sticking problem. I had this and eventually cleared it by cleaning the two Z axis pillars completely free of oil. My theory on this is: The two Z roller bearings are supposed to roll up and down the pillars. If there is oil on them, they try and slide, causing a minor jam as the balls lock up. Since I cleaned the pillars I have had zero faults like this, ( although this is tempting the fates ;) ;) .

Edited by Guest
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    Posted · Banding on z axis

    It's all down to the quality of the bearings, the pillars and their tolerances. Someone in the forum gave me some info on high quality Japanese parts and I started to realise the difference between 'ordinary' bits and the ultimate. We get what we pay for.

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