@snapmaker , you’ve put out a lot of info on the toohead changing features and benefits. That’s great - thanks. But please continue with more in-depth technical discussions. In particular, I’d like to know how you do flow rate and PA calibration. Your launch page states: Fine-tuned Extrusion for Ex…

Hi RD7 , check this out: U1 FAQ – Official Info Summary - #15 by Wombley [image] U1 FAQ – Official Info Summary Hi Wombley! The automatic calibration only covers PA. The flow ratio calibration is preset in the slicing software for official Snapmaker filaments. For third-party filaments, it needs…

Thanks. Somehow I missed that post :upside_down_face: Is there an explanation anywhere of how the PA calibration is performed?

From a user perspective, it’s been shown in some reviews. You just choose that you want “flow” calibration at the start of your print, and it runs the routine for all tools prior to starting.

I have seen so many of these I’m losing track of what is covered where.:face_with_bags_under_eyes: I’ll go back and review again. Thanks.

I mean, if that’s all you wanted to know, that’s all there really is to see, lol. You chose the option at print time on screen or in SM Orca when you send it. Then it does it.

Will the U1 do automatic flow rate and pressure advance calibration?

U1 Toolchanger

Wyphorn September 12, 2025, 3:35pm 2

Hi RD7,

check this out: U1 FAQ – Official Info Summary - #15 by Wombley

Topic		Replies	Views
Pressure Advanced setting & Automatic flow calibration U1 Toolchanger	6	605	February 2, 2026
Wie man Dynamic Flow Calibration wirklich nutzt! U1 Troubleshooting guides	35	4824	June 12, 2026
PA automatic über fluidd ausschalten U1 Toolchanger	1	114	June 1, 2026
Clear EXTRUSION FLOW CALIBRATION? Can't get toolhead 2/3/4 to print well U1 Toolchanger	9	361	February 4, 2026
Flow Calibration for one new spool U1 Toolchanger Feature-Request	18	858	June 10, 2026

Will the U1 do automatic flow rate and pressure advance calibration?

Related topics