UltiDad

Thanks for the heads up Dustin. After you comment I decided to take a closer look at the spring and saws something. I took apart the printcore after and noticed some small loose debris (strings from filament) trapped inside the spring coils. Maybe this was getting caught in the coils during interchanges between PC1 and PC2 and throwing off the calibration. Time will tell. But TBH would still love an easier way to tune the Z-diff through software LOL

Thank you - Yes, that is what I currently do ..... was looking for a better way. Just it's annoying as it takes time just to tune one variable which I'm sure is just a value stored somewhere in the firmware/software. And every 1 out of 10 I may not bring Extruder 1 back to the exact same position throwing off my first layer (which was perfectly fine before).

Hi, using legacy UM3 machines, not the S3 Is there is a way to adjust the Z offset between Extruder 1 and 2 nozzles through the Cura software profile / machine settings instead of running the manual calibrate level buildplate process and then trying to make the adjustment in the last step? My leveling is pretty good but sometimes I just want to make minor adjustments without losing the rest of the calibration setup. Thanks in advance

Hello - question for those familiar with the original UM3 I was servicing my UM3 for an issue with intermittent WiFi connection problems: printer would be fine but every so often would lose connection ("Printer Unreachable" error in Cura Digital Factory monitoring screen) as well as not be able to generate a WiFi hotspot during WiFi setup on the machine. Would need to restart the machine, and then would work again for a while until it didn't. I finally opened the underside and upon examining the WiFi daughterboard that is attached on the main board via a 5-pin connector, I noticed it was very loose and assumed it must be losing contact with the pins at arrow "A" over time due to vibrations during printing and such. I did an old fanning technique on the pins to make them fit more snugly in their female receptacle on the main board and secured it with tape. Since then several days with no issues so I think the source problem has been addressed (fingers crossed). However I was surprised to see that in my machine it was ONLY this connection that was holding the board in place. I did see a hole going through standoffs at arrow "B" and my feeling is there is supposed to be a screw here? Also the circuit board trace would suggest this screw would provide a chassis ground for the board. Can anyone please confirm? And if so, what is the size of the missing screw so I can replace it? Thanking you in advance.

Thank you Yes I disable it when I can and use the skirt option (or brim if the part might warp) then no need for the blob. I just find when I do want the blob the behaviour a bit weird, especially considering the UM2 never did that and it could easily mess up the first layer.

Thank you for the fast reply. Yes you are correct, not BIG issue as it is used in a small percentage of my prints, only where I have the combination of need for priming and I'm tight for space or have a large intricate perimeter (and the skirt consumes way more material than the quick blob). I use EasyFil PLA and it works great with the bed heated to 60C as-is. I can get a mirror finish on the part and great first layers without the need for adhesion aids. No cleanup once done, just remove the part and ready for the next print. The issue really is the heads squishes down the prime blob (which is OK) and then begins translation right away which just drags the blob. My thinking was just moving the bed down a bit after squishing so there is no contact with the head before translating would greatly improve this feature. I also run a UM2 and the prime blob isn't squished by the head so I had no idea why this "feature" was added to the UM3 which requires more manual intervention from the user (and risk of the prime blob ruining the print). Anyways, thanks for the suggestions and sounds like my question is answered with respect to the solution being in Cura. Thanks!

Hello Apologies for bumping an old thread but have any of the new drops of Cura addressed this? I'm due to update but haven't got around to doing it on all workstations. I still get the prime blob "smash and drag" on my UM3 from the print head and although I use workarounds whenever possible (skirt or staying in front of the machine with needlenose pliers to pluck it) it is quite annoying and uneccessary. There is no reason for the head to drop down on the prime blob. It is a bug and one that can easily ruin a print if you're running the machine remotely.... no clue why UM won't fix?

Hello, I noticed excessive vibration on the print bed of my UM2+ when the head would be printing over the most catilevered parts of the area. Raising the buildplate, I took a look underneath at the attachment screws underneath the bed and seems I'm missing at least one? Would appreciate it if someone could please confirm how many I'm actually missing (as there seems to be more holes) and what the size / thread pitch of the missing screws are? Thank you in advance, cheers.