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