VidJa

Fortunately I had one of those as spare in the box

I don’t mean to go cheap, but let’s face it. This particular system is rather old and mainly used at high temps 24/7 for the past 4 years at least. is it still worth to invest €485+? i’m glad I got it to work again ( which says something about build quality) and willing to invest in maintenance, but overhaul costs should be evaluated with new system costs in mind (bambu perhaps?)

I’m not sure. The only upgrade kit I could find that is available costs 485€. excluding a new bowden tube. That is more than a brand new creality ender. new feeders can be found for €60 or so. Would a new block make a big difference?

Hi all, here's some followup on my inherited old lab printer. The thing has been running more or less continuously for the past years (mostly ABS and PETG) and definitely needed some love (and cleaning) today I managed to fix the rear fan. The wire was broken on two places. As expected at the the bending point near the extruder before the connector and actually inside the print head after the connector. It was broken inside the protective sleeve that bundles all the wires. Apparently it was repaired before and that soldering point came loose. I re-soldered both and used a small heatshrink tube to protect it. The fan turns on when the extruder is over 40C. Thanks @gr5 I've re-seated all the connectors, some of them were a bit loose, probably because of all the transportation. My other issue was the heated bed. Sometimes the I got the bed temp sensor ER02. I disassembled the heated bed and it turned out that the connectors for the PT100 were a bit oxidized. I cleaned and re-seated them, slightly bending the clip inwards first. I did not get the error anymore. Furthermore I found some magnalube for the z-axis, which was dry and dusty, so cleaned that as well. I found some unilube for the x-y axes as well, not in the ultimaker box, but my neighbor had some for his model train sets. (i cleaned them first with a tiny bit of isopropyl alcohol). Maybe the bowden tube needs to be replaced too The printer came with several spools of PLA, ABS and PETG and something called durabio (logical, given that the printer was used for lab stuff). I managed to rescue some of the PLA at 50C since it has been in a rather humid enviroment for a long time. Didn't try the ABS and other materials yet. Below is my first print in PLA after all the repairs. It took about an hour. My only concern now is the feeder. It is the old UM2 version, but apparently the UM2+ version is a lot better. Can I just exchange it? I do get some grinding with one of the PLA spools.

Thanks both for all the input. I will check all the suggestions over the Christmas holidays

Hi, thanks for your response. I have indeed the version with the black feeder. in between I replaced the tfm coupler(was deformed) in the extruder head the rear fan had a broken wire, but i found out after repairing, it would still not run. However if I apply 4.5v to the fan via the connector (uncoupled from the orange/blue wired connector of course. It does run smoothly. Nothing blocks the fan either i measured the voltage on the orange/blue connector after switching on the machine and heating the nozzle, but it remains 0 so the issue could be the connector to the main board or even the main board itself. So the story will continue

Hi all, I inherited an ultimaker 2 extended (so a newby) and face a few issues. Sometimes i get the dreaded bed sensor error when I use a heated bed. when I try to print a standard cube or anything else, the printer stops extrusion after a couple of minutes into the program (5-15, may vary). If it prints, the print looks nice i’ve checked a few things: the printhead is not clogged. the bowden tube sits firmly in the printhead and does not seem to move during printing. i can manually feed and retract the filament but sometimes it looks like it is not entering the print head (when it does I can extrude ) when it gets stuck and I detach the bowden tube, the filament look like in the picture, with a blob at the end that seems to block progress The feeder is clean and firmly moves the filament i’ve read and tried the options from the support site https://support.ultimaker.com/s/article/1667417952792 should I disassemble the printhead and replace the hotend? i tried to reduce retraction in the settings from 4.5mm to 2 but that did not help. I use PLA at the recommended temperature (200c) for now i do have some spare parts such a a hot end and print heads Any ideas on how to resurrect this otherwise fine printer? best vic