Andrew_F

Thanks Torgeir, A brand new print core. I'll check the terminals and ensure the wires are in properly. A

Hi glx, Thanks for the reply. did a hot and cold pull prior to posting. All clear. Also ‐ wierdly my printcore shows a max temp in the 200s Appreciate your input. I'm trying to troubleshoot a few things on this machine with partial success. A

Agree to go to support, but the first step for me would be to wait for material to creep up feeder tube, if it's just creeping along and looks stalled. Or disengage the feed sprocket and manually feed it the last inch.

also impressed by what you've achieved. Well done.

Hi All, Resurrectng a UM3 extended with latest firmware, 5.3.0.20211003. Two new printcores, the one in question has done 18 hours, mainly printing benchies to troubleshoot. Early on, found out that the printcore front fan had failed prior to me buying it last week. So, core may have overheated, but max temp recorded in the settings is 260 degrees, not overly hot Have problems with random changes in print quality. I logged in to the printer via IP for the first time today and had a look at the temperature chart. Are the spikes in this a thermocouple error? Regards, A

Hi all, Stripped this from the github UM3 assembly as I need to make a couple up (the second hand machine I just bought had nuts and bolts in place of this rivet nut - meant I had to strip down the LHS of my Ultimaker to reattach the feed unit to retrieve the loose nuts and washers that fell into the cavity.) Please see attached dimensions to save you the work. I'm not going to bother stitching in the teeth, just hot melt glue it into place. Admin - if there is a better title, please feel free to change it. Regards, A

Easy, Old one pushes out, new one snaps back into place. Went looking for the part number, found this instead. https://support.ultimaker.com/s/article/1667417570859

Hi, Reviving an old thread as I think that this may be the issue. I'm a trade cabinetmaker, first year fitter/welder qualifications and a qualified engineer. I'm reviving an old UM3 and returning it to original specs - stripped it down a few times on the bench, and the local agent and I are on speed dial at the moment for spares. When I removed a feeder, there was a single nut and washer behind the case (muttered curses when I heard the nut fall inside the case). Fully stripped the LHS of the case down to retrieve it. There was also a 4 pin socket coming from the printer enclosure into the void behind the feeder, wires running down to the main board, with no corresponding electronics in the feed unit. I assume this 4 pin socket was for the now redundant filament sensor? A

Thanks Dustin, After posting, I also realised that the wayback machine would have the original article also - they're both as detailed. A

HI, Reviving an old post on a similar issue rather than create a new post. I bought a fairly well used UM3 extended last week It had a broken wire to the capacitive sensor (now re--soldered back on) Once reattached, I am now getting the 'realistic height error' during levelling. There was a physical difference in the dimensions of the two print cores when I took them out of the printer, the heatsink and lower thread had partially unscrewed. When looking for further options for repair, I came across this page. https://www.dynamism.com/learn/3d-printing/ultimaker-error-codes-and-solutions.html All the other links work, but the 'realistic height error' link goes to a SalesForce splash screen. Does anybody know what content is on this page for error checking? (have done the following: cleared print heads using hot and cold pull ensured print nozzle is clean externally, wire brush and wipe with rag dropped bed to lowest level, then unscrewed three turns manual adjust first. ) Open to any further ideas,. Regards. A