Ender 3 s1 Pro weird behaviour

[rsd1982]

hi all.I have an Ender 3 s1 Pro running a Sonic Pad with Klipper firmware.When I send a print job which is wide and flat it doesn't print well without a raft. With no bed adhesion or with a skirt or brim I get nozzle dragging, lumps and bumps and general bad results.If I print the same design on a raft it comes out perfect.I do manual tramming at temp (60 degree bed and 200 nozzle) with a 0.1mm feeler gauge before a 100 point auto bed levelling. Standard settings in Cura with only the addition of a raft.Creality PLA filament, just opened.what's going wrong?

[Bikeracer2020]

Try increasing the 'Z' offset by +0.01 or +0.02.

Clean the bed with some IPA before printing

[rsd1982]

Ok, I'll give that a go and report back tomorrow - currently printing my son a space shuttle! (On a raft!)

[Bikeracer2020]

You could also try increasing nozzle temp by 5 degrees.

Perhaps you could have a look at Prusa slicer, there is a configuration profile for your printer in it.

[rsd1982]

As you can see, the bottom few layers look messy where the nozzle dragged. Side walls look great. Top is a bit scrappy. I'm going to try e-steps next to check over or under extrusion.