Changes to the 0.2mm nozzle today. Been printing with it earlier so something has changed. Its seems like the nozzle is scraping against the bed and blocking the filament flow to an extreme minimum rendering the first layer a total mess. Ive been around since the good ol K8200 was released in 2013 so Ive done my fair share of manual leveling so i recognize a leveling problem.
The nozzle is not clogged. Not even partially. God a good flow going when manually extruding with lifted extruder gauntry.
-I have changed the nozzle type/size in the printer.
-I have selected the right size in Bambu Studio.
-I have restarted the machine and gone through all calibrations.
-I have tried making the first layer height for a 0.2mm nozzle to 0.15mm with the rest of the print 0.10mm.
It seems like the end stop values somehow is wrong. Anyone stumbled upon the same problem?
I am in the exact same boat as you. I’ve tried all these things, but the nozzle seems intent on scraping against the plate. I can’t even get my first layer to go on; I get a good calibration strip, then a gouge in the plate as the nozzle moves to start the first layer. Waiting to hear back from Bambu support – so frustrating!
Just checking in to see if this is the same issue. Does your gear click when trying to print the layer as well? Everything else seems to work perfectly. I can stop the print and immediately lift the extruder and perfectly extrude manually.
My extruder gear doesn’t click, but I’m printing with PLA Matte which might be a little softer than regular PLA. In my case, the extruder gear carves a slice into the filament (because there’s no space under the nozzle for it to go) until the gear is spinning freely, thinking it’s still pulling filament. Every time this happens, I need to retract the filament out the top and snip the damaged section before trying another print.
;===== for Textured PEI Plate , lower the nozzle as the nozzle was touching topmost of the texture when homing ==
;curr_bed_type={curr_bed_type}
{if curr_bed_type=="Textured PEI Plate"}
G29.1 Z{-0.02} ; for Textured PEI Plate
{endif}
aka it is shaving -0.02 off Z if you use textured plate, in order to make it ram home all the PLA into the nooks and crannies. An extra -0.02 off a 0.10 initial layer means that auto leveling and the beds speckled peaks and valleys need to be within 0.08 tolerance.
You may unironically find relief by lying to your printer and saying its got a smooth bed
I’m having the same issue with a 0.2mm nozzle.
Doesn’t matter if I use a smooth plate or textured and doesn’t matter which filament I use.
It’s almost as if the Z offset is too low.
It’s fine with a 0.4mm Nozzle
I’ll try the smooth plate as I’m having the exact issue with all PLA filament brands and the 0.2 nozzle.
Don’t believe it’s blocked as it flows well, has been happening since it was new, I ordered another nozzle just in case as well (but that’s yet to arrive).
Have tried calibration but no difference. Also not heat creep as it’s very cold where I print and doors open made no difference.
The scratching of the plate was what caught me off guard! I was on edge since I was running my first print using the Cool Plate SuperTack for the first time and the calibration scratched the back edge (of the brand new plate!). The print failed but I think it was related to the filament as I was getting some weird type of stringing. Just too many variables to know the source…
I had a similar issue with black PLA. It finished but it took some of the texturing of f of my build plate when i removed it. The stl happened to be unsupported. Despite the scraping, everything has come out ok
Hey everyone, I had the same problem today and been researching a lot, I found that the solution is to change the value of the z offset from {-0.02} o a straight {0} like this in the Machine star G-code:
===== for Textured PEI Plate , lower the nozzle as the nozzle was touching topmost of the texture when homing ==
;curr_bed_type={curr_bed_type}
{if curr_bed_type==“Textured PEI Plate”}
G29.1 Z{0} ; for Textured PEI Plate
{endif}
Same problem here. The 0.2 mm nozzle is way too near to the bed (so near that I’m not able to remove the “print” from the bed).
It’s necessary to use my 0.6 mm nozzle to print over the previous print to remove all filament from the bed.
What I did:
Using BambuStudio 2.0.3.54
Added a Cube (40 x 40 x 0.2 mm)
Using the default settings for the A1, 0.2 mm nozzle, Textured PEI Plate
Filament is original BambuLab PETG
Setting the “lower the nozzle” part at the end of the start Gcode to G29.1 Z{+0.08} is too high again. I don’t want to manually calibrate this offset. This is really only a workaround and not the solution.
You might have over-torqued the hotend heating assembly’s 4 mini screws OR they might be loose. Finger tight only, don’t use any leverage, just roll the hex key shaft with your fingertips.
Past that, could be a loose screw anywhere in the extruder or toolhead block system. If you’re determined to fix it without using g-code offsets, I’d recommend reading the wiki on how to do a new toolhead block install. Strip the extruder down to that level, and rebuild it. If the toolhead block screws are loose where it connects to the linear rail, your nozzle is always going to flex, lifting up and backwards, whenever it touches the bed. This’ll cause a small but serious error on bed distance that is enough to cause the 0.2mm nozzle to be too close to the bed.
When the nozzle is too close to the bed, it takes too much pressure to extrude AND the filament gets cooled on contact, the solidified plastic in the small clearance space is basically like… causing an immediate jam. The jammed plastic then gets scraped around the bed.
I found another solution for me: Flip the build plate.
In the past I only used one side of the textured PEI plate. This side seems to be worn out enough now for the 0.2 mm to be too near to the bed.
The other side of the textured PEI plate wasn’t used in the past and gives a good print result even for the 0.2 mm nozzle now.