I am attempting to print a large (10" or 254mm) diameter cookie cutter on SM 2.0 A350 with the Quick Swap kit and Bracing kit installed. I am using the Dual extruder (left only). Firmware and Luban are the latest and they are both aware of QS and BK installed. The model is imported to Luban and positioned automatically in the center of the work area. In picture 1, you can see that it fits properly, but is a little close to the upper Y limit.
When printing, the area near the upper Y limit is not as smooth as it should be (picture 2). Also note how the skirt blends right into the part Iām printing. Normally, the skirt is about 3mm away from the part, but as it gets closer to the very top it just merges right into the part.
It looks as if Iām hitting the upper limit of the machine, but shouldnāt Luban take care of this automatically? If I manually position the piece in Luban so itās not so close to the upper Y limit then the part and skirt print properly.
Could this be a Luban problem, or is it some kind of hardware issue? Iāve checked to make sure that the cables have enough slack when itās printing in this area.
Any suggestions are appreciated. Thanks in advance.
If you get to the build space limit (a virtual box in the firmware) this appears like your print.
Have a look at this thread, itās about cnc but @nweolu wrote there how it gets interpreted by the firmware.
There is also the build space shared from the official site, maybe there is a difference in Luban and firmware size.
You are running into the limits, as @xchrisd pointed out.
This should be a pop up warning in the interface, i donāt think there is one. Please fill out tech support to give developers a hint that it is needed. https://snapmaker.formcrafts.com/support-ticket
I unexpectedly ran into the quick change/bracing kit limits the other day. I incorrectly assumed that Luban, when those items are incorporated into the machine settings, would have adjusted the build plate appropriately. Nope. I have to move my build down to accommodate the loss of size myself. It would have been nice to have that incorporated into Luban!
Thanks for the reply. That was an interesting read and it describes my issue exactly. I wonder why they decided to squish the print rather than just clip it. It would have made it much easier to detect the problem early on. Iām going to submit this issue to SM because Luban should know better.
Your writeup describes my issue. Iām relieved itās not a hardware issue. Per the SM FAQ, the max Y distance for my configuration is 303mm. However, some of the Y endpoints in the gcode file exceed this value and attempt to go to as high as 314.624. Squishing the print like this is not a good solution. It just adds a lot more plastic into a tinier area ruining the print. I donāt think Luban is taking into account the QS and Bracing kits even though they are checked in the machine options. Iāve submitted a ticket with them.
I had a laser cutting that was 270x269. Not thinking, I just dropped it into Luban, set the cut parameters, exported to USB, uploaded on the machine, and hit start. It cut-off the upper portion; it did not squish or resize the project. Noticing the cut-off top, I moved the project down and everything was fine. I would have expected Luban to resize the workspace and recenter the 0,0 origin. Now I know.
I didnāt do a SM support ticket. I just adjusted my mental parameters, hopefully. I usually donāt do full size projects so I hope I remember next time.
The missing number of support tickets about this, is what stops snapmaker from implementing a failsafe check into the firmware. So you actually get a prompt on the machine interface os something similar before running the job.
I received an email from Kira at SN and the problem was found to be in Luban. The development team is aware of the issue and It should be fixed in the next update.
