I am curious how often do you service the linear rails on the 3D-printer:

  • How often do you lubricate them (MGN9 or MGN12)?
  • How do you lubricate them?
  • What volume of lube do you use?
Explanation of how often you should do it (HIWIN Lubricating instructions for linear guideways and ballscrews)

Most 3D-printer use MGN12. Reading the HIWIN documentation they shall be lubricated every 20-50km (depends on a lot of factors).

How much is 50km in print time? Assuming an average speed of 300mm/s that would be approx. 46 hours!

In other words, the generic MGN12H carriage needs 1-2 times per week maintenance.

How much lube is suggested (horizontal mounting)? 70µL for MGN12H. For MGN9H it is 30µL!

  • B0rax@feddit.deEnglish
    3·
    6 months ago

    An average speed of 300mm per second on every axis? Including acceleration and cornering? How fast are you printing? 1000mm/s?

    You might be a factor of 10 off here…

    • EmilieEvansOPEnglish
      2·
      6 months ago

      Printers are pushing significantly faster acceleration these days with upto 50k mm^2/s and 1m/s is already real.

      • B0rax@feddit.deEnglish
        2·
        6 months ago

        Which hotend do you use to push >100 mm^3/s?

        Lets be real here, a bambulab x1c which is currently considered high speed for >95% of users (which you are asking for here), has a maximum flow rate of 22 mm^3/s which limits it to about 250mm/s for 0.2mm layer height.

        • EmilieEvansOPEnglish
          2·
          6 months ago

          has a maximum flow rate of 22 mm^3/s which limits it to about 250mm/s for 0.2mm layer height.

          Divide the number by 5 which would be roughly every 100 print hour or two weeks of printing.