FLESKET2000

Finally! Now everything seems to work as it should. Did my more special-time-consuming-test-print which is 300 mm high, and everything went like clockwork. (see video down the page) To summarize: -Change the Gcode and possibly the Z height in Cura's machine settings (see picture) -Cut off the screw on the underside of the table that pokes the switch. (and grind it smooth.) Done! Now all that remains is to print something "for real" But I don't have such a job at the moment. But I will come back and report when the time comes. Thanks again for all the help!

Now I have tried to print again! I cut off (and filed the end smooth) another 2mm of the screw that goes towards the bottom of the Z position. When I measure from the glass panel up to nozzle 2, the measurement is 305 mm. I tried printing a 0.8mm/diameter cylinder, 300mm high and it seems to work fine now! I hear no more rattling from the stepper motor, which seemed to be losing steps. But I must first, to be sure, maybe print a "real", more complex print before I can be sure. But it might be sometime next week. Thanks once again for all the help I got from especially @Torgeir See the video of this morning's print test

Hello Torgeir. I have the latest, updated versions of both cura and UM3E. Cura 5.1.0 Cura G-code flavor Griffin. UM3E Firmware 5.3.0 But this has happened before I updated to these firmwares. But it only seems to happen when I print at its full height, which I don't do very often but it happens a few times every year. I discovered the problem by chance when I was printing a part where I used the entire height of the printer and when I got to work (where the printer is) it was just finishing the print and then I saw what happened when the print head collided with the part it printed: this was in february 2022 and i don't know what firmware i had then. You mention that it misses steps. What do you mean by this? Are the stepper motors causing problems? Or is it some kind of software bug? Many thanks for the help and your commitment Torgeir

Now I have tried to test print again. I did two tests. In both, I printed a very thin (0.8mm) "stick." Just because I don't want to wait for a more extensive print. I am mainly interested in how the printer behaves; in particular the table and how it moves up and down. At the print, which is 295 mm high, the table behaves strangely and goes down-up-down-up-down. and rattles when the print is finished! This does not happen when I print an object that is only 100mm. I see a clear difference when I print a print that is 395mm high when I compare with one that is 100 mm high, and here the printer behaves normally. (I also checked the switch that regulates the height level when the table reaches its lowest position. I simply took a pair of pliers and cut off the screw under the table about 2-3 mm (the screw that goes down and pushes to the sensor) Now the table goes a little lower, but I Don't know if that helped? I also measured the front edge of the table when it is at its lowest and the top edge of the aluminum table down to the bottom of the printer is about 25.4mm. Would be interesting if there is someone who has a similar printer (Ultimaker 3 Extended.) Who can measure their printer!?) What should I say? I'm just confused by what's happening and don't know how to solve this. I am of course grateful for any tips and advice I can get (and those I have already received.) (click on the links to see video of the tests.) test print 295mm test print 100mm

Now I have tested again following MariMake's and Torgeir's advice. And it works! But I still think the printer behaves strangely and goes up and down when it has finished printing. Why can't it just go up and to the side? But anyhow. Many thanks for the help! I have also realized that it might be time to learn some basic G-code knowledge. Thanks again! ( In the "End G-code" I wrote : G91 ;Relative movement G0 F2400 Z3 E-4.5 G90 ;Disable relative movement)

Thanks for that tip! I don't know anything about G-code so I guess I'll have to learn a bit. But I will do another test today and try your G-code suggestion. Looking forward to the results and letting you know how it went.

Hello again. I tried using the G-code you suggested and printed a test print. But the issue continues to cause errors. I don't know if it's my fault or what could be causing this. See attached video. I am also attaching a picture of what my settings look like. https://vimeo.com/789695717

Thank you so much for the quick response. I'll try to change the g-code at some point. Working on a bigger print right now, but after that...

My Ultimaker 3 Extended behaves strangely when I print tall prints (about 290mm and up to its maximum height measurement.) Has anyone else experienced the same thing? Watch the video I shot and you'll see what I mean.