Additional Filament Max Flow Calibration

Bambu Lab X1 Series
1

I’ve seen a lot of issues people are having in the forums where they use a non bambu filament, drive it at fast speeds and get under extrusion.

Could we get an additional set of filament calibrations to find the flow limit of what a filament is capable of? So we could get some values to put in at a slicer level.

For example,

You could print a line of dots while varying retraction settings and scan for the cleanest edges. If this still strings, you could repeat with a lower temperature and retry.

Then print a snake with increasing flow rates, then scan the snake to see at which position/rate it under extrudes.

Back that value off a bit, and you have the max volumetric flow rate for that printer at that temperature with minimal stringing.

It would also be good for verifying extrusion multipliers. You could print a thin layer and see how much the width varies from the ideal and vary the multiplier until it’s nominal.

1 Like
2

This is what I used to find the max flow rate of several filaments. Works perfectly for now until the possible automation of the task.

3

I think this is a great idea!

I also thought of something similar for dripping nozzles when printing petg. Its always a hazzle to set up a new petg, yes you kind of know from experience how much retraction and z-lift you need but wouldn’t it be marvellous if the printer could figure it out for you? And feedback the values to your slicer…