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Thanks for your detailed explanation that raised few more questions :

  • You wrote you used also Misumi linear bushings but in you BOM their links refer to Robotdigg website.
    Did you get Misumi linear bushings from them ?
    Or you BOM is not correct ?
    Coz LM6LUU or LMK12LUU are not Misumi references but more Aliexpress or THK references, i found for the real Misumi respectively something like xLMUWx6 or xLHFRWx12.

  • You wrote you used the chinese brass bushing. Why did not you consider a good brass or high precision oil free bushing from Misumi for X an Y that would mate perfectly the rods ? since you made your own design for XY slider blocks.