I think that I have exactly the same issue. And I’m happy that the thread is alive haha.
I’ll copy the ticket I opened to bambu.
First of all im newbie and my A1 printer have 3 weeks of use and I printed a lot of pieces from bambu handy app successfully at all, always.
I did not calibrate flow rate as I have to learn it xD and to test it.
I use bambulab purple pla and 3dfils pla cyan
The bed is clean with soap and I do not touch the bed with my fingers.
I trammed the bed yesterday and today I was not able to print decently. I have a reinforced 0.4 nozzle.
Hello, good day,
I opened this ticket because there is a print-in-place piece of a fighter jet that I am unable to print on my A1. The nozzle scrapes against the piece, causing it to detach from the hotbed.
I am providing the settings I used in Bambu Studio. I performed the bed tramming yesterday, allowing a sheet of paper to pass under the extruder and lightly touch the nozzle, following the official guide with your gcode.
I am using a 0.4 reinforced steel nozzle.
Additionally, yesterday I cleaned the print bed with natural soap and warm water, and I also used 3DLAC. I tightened the extruder screws as recommended.
I am also attaching screenshots of the first layer across the entire bed (I am not entirely sure if it is correct). Additionally, I have a slow-motion video showing what happens, although I am unsure if I can attach everything in this ticket. I also have the gcode.3mf file if needed.
If you require any additional information, please do not hesitate to contact me. Thank you.
Yes you have some smaller spots of the same thing. Unfortunately, my printer has very large areas of occurrence. I am really perplexed as to a solution. For me the issues are generally in the same area of the print bed. Sometime large sometimes smaller. I am not sure what is causing this.
If I increase the flow, it does help the areas where the under extrusion is happening, but it then causes to much plastic in the areas where the under extrusion isn’t happening. Only thing I can think of is a bed leveling problem, mechanical or software or both affecting this.
Currently as a brand-new printer I am really not happy with the results especially because this first layer is an unacceptable quality.
Using Orca Slicer today with Overture Matte Light Grey. I went through the Flow Rate and Pressure advance calibrations. The right side has a perfect surface. And on the left which is the left of center of bed it goes into the under-extrusion area. I did these with the “Solid Infill Direction” in two different positions 135 Degrees and 90 Degrees. Still the same issue there is an area of under extrusion which I have not been able to solve yet. This area corresponds to the same print area of the bed. Still trying to think of possible solutions. I ran the ABL 15 minute twice. It is most defiantly sampling these areas I can hear it touching the bed.
I am updating my ticket as I am updating this thread. This is a brand new A1 and my first Bamboo printer. Disappointed so far.
Cleared and checked the entire filament path, cold pull, took out tubes, took out filament guide, changed the nozzle to the Hardened steel. BAM Printed an entire bed 250mm x 250mm 1 layer and it’s a solid sheet of plastic.
100% fixed.
I think the factory Steel Nozzle had a defect in it which was restricting the flow of Plastic. I never found anything in the filament path that was obstructing. Needless to say, I am not using that nozzle again. Now I have the hardened steel installed.
