A1 Purges every layer using One Color - A1 series AMS Lite

Hi all,

Coming here because I’m having a problem where my printer purges every layer or so. The first Image shows the travel path of the hot end. I have Timelapse set to Traditional and Print Sequence set to By Layer. I’m able to resolve this issue only if I print by object; however, printing by layer, even when using only a single color, still results in excessive purging. Image 2 shows how excessive purging is creating print failures.

From what I’ve already read, having the timelapse function set to traditional often resolves this issue, and printing one color by layer shouldn’t result in excessive purging. I only started getting this problem within the past month or so. Previously, I had been able to print multiple objects without needing constant purges.

Side note, my purge tower also looks funny.

Am I missing something obvious? This is my first printer, and not everything is immediately apparent to me.

I am using A1 Mini with AMS Lite and the newest version of Bambu Studio.

Image1

Image 2

Try disabling timelapse entirely (i.e. untick it in the print dialog, disable it on the printer when starting from SD), as I don’t get that with no timelapse. With timelapse, it needs to stop every layer.

Print Dialogue - that’s the window that pops up when I hit ‘print plate,’ right?

I always keep ‘timelapse’ toggled off, but I still get the same issue. Shown as the blue path on the print plate. It’s weird, it only does this if there are multiple objects. I can work around it by printing ‘by object,’ but I don’t want to have to print 4 separate times to avoid flushing/purges if I’m printing in the same color.

The firmware running on the printer skips those travel moves depending on how you toggle the “timelapse on/off” flag, but since they remain in the gcode as a possible logical code flow, they get rendered.

If I change from “print” to “export gcode”, save the file, then load the gcode in a gcode viewer (orca,prusaslicer,etc), the travel moves off to negative-X-Axisland still are shown.

But if you print this, on at least my A1, and observe it with your eyeballs, those movements will not occur in real life.

Oh that makes sense - thank you! A few of my prints seemed to fail because of excessive purging, but I must have had time lapse on because my last few prints have gone well.

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