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garaha2012

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  1. Hi Experts, for my Mark 2 UM2 I want to use Cura 4.0. Are the current Mark2 resource files suitable? When I want to activate the Mark2 UM2 in Cura 4.0 I get the following error message and do not know how to correct my files: See enclosed screenshot. What can I do? Or stick with Cura 3.3.1 ? Thanks Gunther
  2. I have my "UMO 2+" with mark2, which is beside the wooden frame an UM2.. And then I only have one interface. Can Duet be used with Tinker mark2 firmware??
  3. Hi experts, I am thinking of building a larger printer using the Jennyprinter 4x340 as mechanical base. Build size would be 340 x 220mm. I intend to use Ultimaker 2 electronics and also upgrade to mark2 dual extrusion. My question is: Do I need a special version of the firmware or is it sufficient to adjust the size in Cura? Thanks Gunther
  4. Hi morfeushav, I understand that the lifting is through the wave spring on each side and the extruded "active" filament presses the relevant nozzle down. Once retract the nozzle goes up. That part is quite ingenious in its simplicity. I do not fully understand why this needs water cooling.
  5. Hi conny_g, I am having very similar problems. I thought it was down to movements of the head in x-direction. I keep printing new couplings to avoid the slight movement of the bottom magnets. But since I read your findings I think I have something similar in addition: First I calibrate properly using the well known xy scales for adjustment. Then I print something and the surprise offset is more the .5mm out in both directions. That is right from the start. Then I used some calibration model (four checkered square) in the center and calibrated from there. That give me less offset in the printed model but still and again .3 to .5mm offset. As I said I blamed my mechanical execution of the coupling print but the offset I find is more than the mechanical looseness I have at the bottom magnets. I cannot offer a solution to you other than saying if there would be some software glitch it would also explain what I find.
  6. I just want to report that on Cura 3.2 on MacBook I do not have proper letters, see attached screenshot. I have this only on 3.2. Any suggestion what to do? Thank you.
  7. In my opinion the difference in support structure is due to the different characteristic between Cura 2.5 and Cura 3.1. It is not the difference in UM2 vs UM3.
  8. Thank you, maybe I should just try and filament loading will give me the first indication where I stand. Sometimes one reads too much instead of just trying ;-)
  9. Thank you very much, the factory reset stopped the extended z movement. Now I will go through the whole settings again including a renewal of the firmware. One other question: I have used the stepper of the UM Original feeder to drive the UM2 feeder for the second unit. It is this one. Also I believe the same the UMO uses for xyz axis movement. Can you tell me how many steps I need to adjust to and - more important - where do I change the steps per length?
  10. Good morning experts, I am stuck with my Mark 2 conversion and need some help. I had my Ultimaker original - very original, one of the very first - converted to be an UM2+. This "UMO2+" is a very good printer and gives a lot of joy. Next step was to convert to Mark 2. Everything went fine with one problem remaining. When I want to "adjust z" my print bed moves up and never stops. The print bed then crushes into the print head. I do not know how to make the print bed stop near the nozzle. Now, one suspicion I have: Loading the Tinker firmware I initially made the mistake to load the extended version, but had that replaced twice with the correct firmware version "expansion-board". I had the firmware replaced before I started to "adjust z". It appears as if the Ultimaker still has the extended length in force, despite the change in firmware. Maybe someone has experienced the same and/ or could offer advice . Thank you very much.
  11. I do not know how to reduce the z-stpper current on the UM original. Must be in the firmware. But I do not know how to open or view the uploaded firmware. Meanwhile I got a response from Ultimaker support and hope for a helpful outcome of the ongoing discussion.
  12. Printing sideways with a fan: I had put the printer on four blocks and directed a cold blower towards the electronics. I could print alright but gave up after 10min. I proved to myself that the overheating was the problem. With the original fan replaced I thought that the problem would be solved. But it only improved - meaning printing stops later. Presently I have to travel and need to investigate later. Maybe in the meantime Ultimaker can come up with a clever suggestion. Thanks for the 19 to 12 V converter hint, will check again that the fan works properly.
  13. Another update from my side: I have replaced the fan for the electronic board. Now the fault free print duration increased from 30 seconds to 30 minutes. Maybe after many more attempts there is a tendency this becomes worse (shorter) again. It is definitely an overheating problem of the z-axis controller. I have written to Ultimaker support many times. As my ticket is still not drawn to be answered my question to the experts: What could I do? Thanks anyway.
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