Tune/change filament from LCD-menu causes misalignment about prusa_i3_bear_upgrade HOT 9 CLOSED

@gregsaun / @3d-gussner
After correcting the Y-Pinda-position by 3.5mm the misalignment has been cured. Thanks for your support! It made me a little wiser :-))

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@gregsaun My (outside/max.) distance between the left side Y-bearings is 93.8mm. Could you check this please?

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Sorry I can't check CAD for now but you can open the source file to check (Fusion 360).

I am wondering if the distance of the nozzle or the Pinda is closer to the X axis than what it should be. Where is this extruder coning from?

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AFAIK the extruder is not involved in this problem. It's the build-plate that can't travel far enough (by only 0.7mm!) to reach the hard coded (firmware) filament change position. When calling the filament change by LCD-menu the build-plate is moved to the filament change position. My build-plate can't reach this position by 0.7mm. The left-side Y-bearing bangs into the Y-rodholder and can't travel any further.
My extruder is a combination of the Orbiter 2.0 and the E3D Revo Micro.

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3d-gussner stated: We have defined FILAMENTCHANGE_[XPOS|YPOS|ZADD] = X211 Y0 Z+2 which are fine for our printers. And normally the Y axis can travel from [Y-4 up to 212.5] so for the stock printers it has some tolerances.
Standard MK3S Y-travel is [Y-4 up to 212.5]: 216.5mm
My max. Bear Y-travel is 217.2mm. So the max. Y-travel is not the problem. This leaves only 2 options for me: 1. The Y-bearings position is incorrect or 2. The position of the Z-profiles (frame) is incorrect and must be moved 5mm backwards.
The 1st option seems impossible to me. The Y-bearing-position cannot be incorrect by 5mm. That leaves only option 2 which means that the position of the Z-profiles (frame) is incorrect.
To be sure I'll check the Pinda-position anyway.

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Standard MK3:

My Extruder:

So my pinda position is 3.5mm (in Y-direction) closer to the X-axis than the standard MK3. Hmm.... Could that be causing the misalignment?

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You can check the dimensions of the frame here:
https://github.com/gregsaun/prusa_i3_bear_upgrade/blob/master/mechanical_drawings/bear21_frame_size.pdf

But Yes I suspect it is your extruder. Probably during calibration they stock somewhere the 0.0 point and would be different for you.

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Ok. I'll correct the Pinda position and hope and see :-))

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Good news. I close it then.

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