Prusa MK2s

The MK2s, which always performed and never had let me down, was sold on januari 19 2019 after 2 years of service.

Now I ordered another MK3 and some upgrades to accompany the machine. This new machine will be the new test-setup for PLA filament reviews.


Brand: Prusa

Type: MK2s

Style: cartesian

Printvolume: 25 x 21 x 20 cm

My calibration print for dimensions.

Calibration cube by Ex’s 3D-Lab.


Mico Swiss 0.4 mm Nozzle Plated Wear Resistant RepRap – M6 Thread 1.75mm Filament (E3D V5-V6, Prusa i3 MK2(s) /MK3)

This nozzle is made of copper and has a coating with TwinClad XT.  TwinClad XT is a composite coating, designed for very low friction. This should be one of the best coefficients to accomplish an as low as possible friction resistance, even better then a nickel-PTFE combination. TwinClad XT is also very hard and hardwearing. If you happen to work with filaments like Carbon fiber, Stainless Steel, Wood or another filament that contains metal pigments, then this nozzle will be a big advantage in wearing out, compared to the original delivered one.

Important note: Due to this coating, I experienced that I need a couple of more °C to get clean prints then with the original nozzle.


Igus Drylin LM8UU (only on the Y-axis)

Lineaire slide bearing that replaces the original bearings, reduces the sound production. These “shouldn’t” be lubricated. 

My printerframe was perfectly “perpendicular” build, something that is needed for this type of bearings. Bit after printing around 1 kilometer of filament, my printquality fell back significant. After some searching I found out that there was free play on the printbed. this was caused by free play (wear).

For the above described reason, I removed the Igus  and mounted the original bearings again. The latter still do their job perfectly after several spools of filament. They only produce a bit more sound then the polymer Igus that I’ve tried before.

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