So I routinely run two of the same spool type for large jobs over 1kg, this creates a problem: sometimes the AMS switchover results in a cooling and shrinking, but the most common issue is the flow calibration for the initial spool can be too different from the k value for the 2nd spool.
How do I know? after running several dozen of the same job, which requires two spools each, if I use default values and disable flow dynamics calibration (pressure advance) or if I let it calibrate the first one, the layers printed with the second spool results in a different look to it’s corners. Trust I ran the gamut of checks on FIVE X1Cs, adjusting belts, lube, squareness, etc. what fixed it was flow dynamics calibration - but for each spool before printing.
This is now part of my workflow, and though it takes about 15 minutes, it’s a welcome assuredness I have come to embrace.
What I’m having trouble with though is two things:
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I would love to be able to run Flow Dynamics (Pressure Advance) Calibration from the printer and store it to a spool setting on the AMS not just on the first spool at the beginning of a job, but manually on some or all spools in the AMS and have it store the values to the AMS settings - like Bambu Studio can in it’s Calibration Page. I can imagine a menu function to perform this but it’s likely a bridge too far for the firmware to handle this.
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Keeping track of K-value results is getting disorganized. I have to occasionally go into the calibration page, Manage Result, and delete the duplicates I named differently. It’s left me having to name them like “Bambu PLA Matte - White X1C1 A1 7-31” “…A2…” etc. it gets exhausting, but is the only way to keep track of spools each time I print. I’ve considered labeling the profile by the K-Value in the hopes of making essentially a static library per printer I can re-use, but then I need to label the spools physically as well, e.g. dry erase marker or print labels on my thermal printer - this might be a future method of keeping this organized, and maybe running it once per spool when I finish drying them. Problem is I’m lazy and this is a lot of extra work lol.
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Pie in the Sky: If somehow the Bambu’s RFID tags, if they have a truly unique identifier (serial number) it would be so rad if the AMS could simply reference that and match the calibrated value, it won’t happen anytime soon, but would be pretty sweet.
Anyone else have this meticulous of a workflow? I’m printing aesthetic prints that require perfection for the price points I sell them at.
Here’s an image to show an extreme of what can happen when the K-value is drastically different from one spool to another of the same filament:
