So I ran a 5 hour print last night and didn't have any issues. Not even the layer shift. I don't want to mark this thread as closed/fixed just yet because it may happen again, but for now I will share my tips that helped me finally succeed. - Make sure the hot end fan is actually cooling the whole hot end (this was a design flaw in the effector assembly that I overlooked. Modified the design toby MobiusOne - Delta Machines
So far, replacing the heat brake has helped. Also replaced the nozzle and Canola oiled that. Haven't had any jams yet, been incredibly smooth. Re-printing what I printed before (that had the layer shift) but slightly rotated, hoping that will counter the shift...by MobiusOne - Delta Machines
Back to it today. Set up about a dozen tests to vary some aspects of printing. Also replaced titanium heatbrake with original due to a design difference in the brake. And added Canola oil to lube interior. So we'll see how it goes!by MobiusOne - Delta Machines
So my test print with readjusted cooling on the hot-end still jammed on retractions... I'm wondering if maybe the new heat brake (titanium) is the new problem? Idk.. I'm starting to get incredibly frustrated by this and it's definitely a de-motivator.by MobiusOne - Delta Machines
Quotehercek If your parts are narrow like this: Then you may have just a simple skipped step on one or more towers. The XY shift is so small that you may not notice that there is also Z shift.Try to break those parts. Are they breaking much more easily at the location of the the shift? If yes then you probably have also Z shift which you re not noticing i.e. it can be a skipped step. That was aby MobiusOne - Delta Machines
Well... I feel a fool! I am pretty sure I've isolated the jamming issue. I forgot that when I built the hot end, I ended up having to move the hot end cooling fan higher than it should be (due to the mounts design, found online). Well, it leaves the three lowest fins out of the cooling so I'm getting EXCESSIVE heat creep! I'm redesigning the mount to accommodate the added length requirement for fby MobiusOne - Delta Machines
So I'm about 4 hours into a print and a layer shift happened. Bed didn't shift, it's too small for it to have been a jumped tooth, and I can't imagine it being an idler pulley slipping down the adjustment slot based on frequency and repeatability. Ugh... I just want it to stop this!by MobiusOne - Delta Machines
I actually just picked up a Bondtech BMG about two weeks ago or so. I might have to fine tune it a little but at 5mm retraction, there was no stringing, but the jamming was pretty consistent on multiple retractions. I was running 9000mm/min retraction speed but my extruder didn't sound too happy about that (super grindy) haha I am building a new mount for it though, hoping that helps with the griby MobiusOne - Delta Machines
So I've ordered a few things, one of which might help. I believe my problem lies within my heat brake. I've ordered a titanium smooth bore replacement along with a copper heater block. I've read a lot of success stories that say the titanium heat brake helped greatly with printing PLA since it helped to reduce thermal transfer up to the heat sink. I'm going to take a look at a couple other thingsby MobiusOne - Delta Machines
Hey all, just wanted to give a quick update! Both good and bad. The good: Layer shift went away when I printed the parts separately and not as a group. Don't know exactly why, but I can't really complain as I was able to move forward with my project. I do have to be weary of it returning though, so I will keep an eye on when it next occurs. Hopefully I can find a trend as to the occurrences. I aby MobiusOne - Delta Machines
Good information! To clarify, my G-CODE is uploaded to a local MicroSD card on the machine and then run from the machine. I only monitor or start the print remotely. There shouldn't be any issue with the machine running the G-CODE at that point since it's not waiting for a buffer refill from the network. I ended up doing a firmware wipe and reinstall to 1.19 and work my way up from there (if Iby MobiusOne - Delta Machines
hercek, Thanks for the input! Using wifi right now is the only real, easy means I have of moving files around quickly and in the present case for running some of my prints. My Duet board is tucked away so pulling the microSD card out every time I have to update G-CODE would be a big hassle! I also can't access some of the files I upload to the Duet microSD using the PanelDue: some sub-directorieby MobiusOne - Delta Machines
DC42, Thanks for the feedback on the wifi disconnecting. I'll give that a shot when I get home from work. If for some reason the wifi continues to disconnect even after a channel switch, is there anything I should look at next? As for the report, I'll do my best to grab it if this reset occurs randomly again. This is the first time I've ever had the system just stop/reset in the middle of a priby MobiusOne - Delta Machines
Update #2: Ran another test print with the same G-CODE as in update one above, but at 85% speed. For whatever reason, it printed fine... at least for a while (will explain in a second). In all my recent G-CODE since I've been having this problem, I set up a process to slow the print down 66% of my normal print speed (3750 mm/min) at the problem areas. So the problem areas were actually printing aby MobiusOne - Delta Machines
Update: Ran a test print with the updated G-CODE with z-hop active for all travel and slightly less extrusion rate. Same problem/effect: layer shifted (about 1/2" or more) and the print continued from the shift as normal. Unfortunately I did not catch it on video either...by MobiusOne - Delta Machines
So I posted about this in troubleshooting a while ago and THOUGHT I had it figured out, but it turns out that I don't! My custom Rostock Max V2 has been giving me the strangest layer shift problem, and I haven't been able to isolate the cause. The layers shift, but the print does not start printing at an angle as one would think (The layer shift and the following layers match up to how a Cartesiby MobiusOne - Delta Machines
Likely my final post on this, but I did end up successfully completing my print. I'm not sure how easy it would have been without Simplify3D's multiple processes, but I ended up utilizing that feature to drop print speed to 30% of normal speed for the range of layers that the skip was happening in. Not sure why it didn't skew the print when it skipped originally, but that is something I'll look iby MobiusOne - Printing
So I will keep this updated as things go along. The print continued overnight and when I awoke, I was greeted with, sadly, another random layer shift at the same layer on the print. I slowed the print down this time around just to see if maybe it was something too fast but to no avail. I'm beginning to believe the .GCODE is corrupted, regardless of the .GCODE simulation showing everything as okayby MobiusOne - Printing
Anyone else by chance have any potential insight? I'm replacing the idlers with a fresh set from SeeMeCNC and just replaced the belts. Running another print to see how it does. Maybe the skip will be gone, maybe not... I'll know soon enough though!by MobiusOne - Printing
DC42, Thanks for getting back to me! I didn't see any error messages on Duet Web Control or the Panel Due, so that means it's safe to say it isn't the steppers overheating. Out of curiosity, is there any kind of timeout function on errors that would show up on the PanelDue or the Duet Web Control interface? I just ran the same GCODE through two different online GCODE simulators and I didn't seeby MobiusOne - Printing
Greetings all! So I recently started printing a large project for someone and for the most part, everything has been going fine up to this point. Now, I'm running into two issues that seem rather strange. Firstly, I had a serious layer shift at the exact same layer on the same print twice. I stepped down stepper current to 1A vs. the previously configured 1.2A (I had it at 1A by default and uppby MobiusOne - Printing