I noticed the drag chain bound up on the printed wire protector on the Z axis motor. ended up removing 2 links. Helped a little but it still will not reliably go down past 290. It looks like there is a slight misalignment in the threaded rod and guide way. I tried loosening the screws for the nut and z motor, then bringing it down and re tightening, but it did not help much. I have since altered the config file (travel distance was 300 on Z) to avoid any future crashes. Is this common? It's not a big deal, but if it is an easy fix, I will give it a go.
I see that too. There is a screws head at the end of the rail which prevents the carrier to drive ~8mm to the end of the rail. Otherwise the wagon would get contact with the z motor screws. The maximum z will get limited too if you add more height to your tools or a thicker bed plate. Examples: - Adding glass at the top of the bed will shift point of z=0 down. - Adding a vulcano heater block or similar will shift the maximum print-part-z to a smaller height because the tool offset will change within z. I will add pictures of my changed z-cover to the following thread: https://forum.e3d-online.com/threads/z-dragchain-vs-printed-z-axis-cover.3508/ To see my limit: I can drive down my axis to around 294.5 (or maybe 295mm) after homing to the switch without the glass bed. The glass will add 5mm? My biggest tools offset is Z-8.25 So my maximum axis configuration will be: Zmax = 294.5 - 5.0 - 8.25 - a bit space = 280mm Greetings
