MGN20 rails arrived!

Hi guys!

I got my MGN20 rails delivered.

Yes, they are most defenilty overkill for a 3d printer, but hey i could not resist for the price and they don't bend on transport.. Atleast not in this length. 3x600 + 2x500 mm.

Also, they are 440c stainless steel and will be used in a CoreXy build made out of 4040 and 4080 extrusions.


Take a look:





Edited 2 time(s). Last edit at 01/22/2019 01:04PM by Govahnator.

Wow! those are nice. Where did you buy them from?

Hi, i bought them from RobotDigg. They offer a good service.

Cool, but overkill.
The weight of the carriages will mean that you need to reduce acceleration.

I have 24x8mm rails in the XY stage of my corexy printer. I have printed at acceleration of 10,000 mm/sec^2 printing at 200 mm/sec. Y motion has to move about 1.5 kg of mass. The pursuit of low mass and high speeds is over-rated. Extrusion is the limiting factor in FDM printing and probably always will be.

But yes, definitely overkill.

Edited 1 time(s). Last edit at 01/24/2019 10:46AM by the_digital_dentist.

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]

These are 20x11 mm rails.

I see the weight as an advantage.
The machine needs to be rigid and i can save on alu extrusions with these. I will use large nema 17 60mm motors and it will be a bowden design anyway.

Paid 200€ incl DHL shipping. Paid the same price as the mgn15 they sell so would be dumb not to take these. As far as i know, these are the only Hiwin clones available in Stainless

Edited 2 time(s). Last edit at 01/24/2019 01:00PM by Govahnator.