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New flow rate calibration paterns #8929

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@Benik3

Description

@Benik3

Is there an existing issue for this feature request?

  • I have searched the existing issues

Is your feature request related to a problem?

With actual flow rate calibration models it can be hard to determine right flow, mainly with some specific filaments (e.g. crystal/transparent one)

Which printers will be beneficial to this feature?

All

Describe the solution you'd like

I found by luck this flow rate calibration method: https://makerworld.com/en/models/189543-improved-flow-ratio-calibration-v3
In comparison to the actual calibration method, it's very easy to find correct flow even with filaments with hard "visual quality check".
The principle is simple, use archimedean chords patern on the top layer and let the model slice, that it prints first one side of the half circles and then it prints the middle helix from the middle (that's important). So the last circle of the helix must fit into the one line space.
Then it prints part of the second side and the rest is printed from oposite direction, which again ends with one line fit.
Sometimes I have to tinker with it a little (e.g. rotate the object), because sometimes the slicer start the helix from outside, not inside.
These pictures describe it better:

Image

Image

Image

Describe alternatives you've considered

No response

Additional context

I successfully used this pattern also to calibrate first layer, I just had to manually edit the g-code to print objects with different z-offset. This request is already here in #7874

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