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AliExpress Nema17 stepper motors on Prusa = Bad idea :(

by Linuxglobal

Just a heads up for people looking into aftermarket prusa mk2 steppers for replacement or upgrade. They look the same, same wiring, etc but the Z axis really show their weakness.

Stay away from the off brands. I got a replacement set on the way from Prusa direct (from chat convo).

I got mine refunded, but they were super weak torque wise.

Anyone have similar experiences ?

mk2 nema17 Prusa, stepper
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Selftest Error MK2s MMU

by Rimbalin

Hello,

i get a selftest error on the hotend Fan.

When printing the fan works fine, but i cant get pass this first test.

Checked all plugs and connected even a new fan - no change...:(((

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The Prusa MK2s MMU & Slic3r kill me...

by Rimbalin

When i´m using the MK2s MMU & Slic3r the printing takes twice (3:00hrs) as long as if i use it with Simplify3D (1:30hrs).
Same settings & objects in Single Mode...
Anyone has a tip for me what i´m overseeing ?

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Temperature cycling

by Portalmini

Hi,

I noticed in my recents prints that the hotend temperature cycle from 212 to 218°C when set to 215°C.
Is that acceptable ?
I feel like it's the case since I change the heater cartridge (for a basic one buyed on amazon). Could the cartridge be the suspect ?
Or is there a calibration needed ?

Thanks for you advices.

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Prusa i3 MK2S USB gone dead

by COMARC

Yesterday, late, after cleaning the heatbed, suddenly the usb stopt working.
Tried another usb port, another pc, octoprint, ... no response.
So i think the usb port on the rambo is down.
I've checked prusa shop and did not find any replacement electronics.
Where do i get a replacement electronics for my i3 MK2S (if possible with software loaded)

I can print from the SD card, but on my last print i had a layer shift,
so i think replacing the electronics is the best solution.

Marc

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