I have spent parts of the last 2 days trying to finish calibrating a hardened stainless steel .60mm nozzle with Sunlu PLA+ 2.0 filament.
I have been trying to print a test cube and I couldn’t get the first layer to stick period. I washed plates, I swapped plates, I removed the nozzle and reinstalled it.
I swapped different filament brands, and they all printed flawlessly. Try that Sunlu white PLA and instant failure again. I was about ready to admit defeat and dry my first spool of PLA ever because I could think of nothing else to do.
But I took one last look at my settings for this filament. And I finally noticed my flow ratio was set at .096 rather than .96. I didn’t even know the slicer would allow a number that small.
Once again the error was found to be located between the chair and the screen…
I sort of did this today. I was testing what each setting in orca slicer’s scarf seam section did and I had the scarf flow at 0.6 and forgot I even had scarf seam on but some seemingly random features ended up as disconnected lines and I blew through like half a roll in calibration prints that came out flawless or near flawless before I realized
Try setting the scarf steps to 1 and the Bridge Flow ratio to 1.5, (as low a 0 and as high as 2). Then under Speed uncheck the Slow Down for Overhangs and set the speed to 20mm/sec. This is often a good place to start and works well on my Bambu mini. For testing, I print an upside down box with a 50x50 cavity and a height of 8mm.
I once spent quite a bit of time because I fat fingered a huge retraction amount and failed to spot it for days. You wouldn’t think the slicer would have allowed a 50mm retraction distance either. It was a direct drive extruder and I was unloading my filament when I thought my extruder was stopping up randomly.
Isn’t amazing what slicers can do? There ain’t no guard rails where we’re going!
Thanks for sharing. It feels good to know you are not alone. I had a similar experience once where after lots of debugging I realized the “PLA” I was using was in fact PETG and I was extruding way too cold.
Ha! Years ago, I once spent nearly 2 whole days trying to unknowingly splice PLA and PETG together. All because I was an idiot and didn’t read the spool labels. I just assumed, with the obvious results and damage to my ego…
