Start script Flsun CUBE

[doug_scott]

I have a Flsun CUBE printer and have installed the FFF file for it into my installed copy of S3D. I never really paid much attention to it and have not really seen anything odd from it, until today.

I have a roll of AMZ3D PLA filament in the transparent orange colour. I have been having all kinds of issues trying to get a decent print, from simply only sticking the outline to the bed to sticking the base layer, but next layer will not bond to first layer. I went through a week of never getting past the 49th layer due to nozzle plugging up. Everytime I would restart the print, it would plug at layer 49. Change the filament, and nothing else, item fully printed.

Today I noticed this line in the start script "G1 Z0.2 F3000". If I am reading this correctly, isn't that setting my Z axis to 0.20? I have my printer setup to not needing any Z-axis offset. The rest of the script contains:

G92 E0 ; reset extrusion distance
G1 Y0
G1 X160 E15 F600 ; prime nozzle
G1 X180 F5000 ; quick wipe

I can see that it never addresses the Z axis from the script. Does this not drop the bed away from the nozzle, much like the Z-axis offset does? Or is it forgotten about once it starts printing?

I have added a -0.20 to the Z-axis in the Global G-code offset box under the GCode tab. I printed an object in a different colour filament and have zero issues with the results. Prior to adding that offset I had printed that same object with disastrous results, none of the layers struck together from about half inch in from the border.

Why does the script have that G1 Z0.2 command? Can I simply drop the .2 part and not screw something else up?

[S3D-Alex]

G1 Z0.2 is moving the Z axis the .2mm. This is usually put in a starting script to define the 'layer height' that the prime line will print at. If a -.2mm gcode offset helps your part stick then it sounds like your nozzle may be too far from the bed. Of course if everything is working well I would suggest not changing anything. The age old if it isn't broke saying comes to mind here.