Originally Posted by
caall99
Did a TON of troubleshooting tonight: I have confirmed that it is not the slicer (Cura 2.1.2 in this case), nor the conversion program (GPX and ReplicatorG in this case) that is causing this issue. I have also scoured the gcode line by line, and even though there are heated bed and nozzle temp code issues, they are ultimately not what is causing this problem. The problem is isolated to the printer, or more specifically the firmware/controller board. Why worry all along...
EDIT: It is possible that the firmware simply has issues with Cura 2.1.2 generated Gcode... and that it cannot apply acceleration settings properly. I tried printing with horrible Makerware and it did not shudder or jitter (though it has in the past with Slic3r and Craftware). Not sure what to make of this... perhaps Sailfish 7.8 as provided by qidi tech is a build off some old (pre 7.5) version of Sailfish that cannot understand new Slicer code??
I so badly want to flash official Sailfish 7.7, but Emily from Qidi told me it could not be done. I have shared my issues with them and hope they will reveal how I can change the firmware.