Disassembly of the original Ultimaker 2 hot end and installing 3DSolex's "Olsson Block".

Olsson Block and nozzles work as good as the original and give you the option to replace your nozzle.

I finally managed to get a perfect print with Copperfill using 3Dsolex's JET RSS 0.5 Stainless-steel nozzle, something I had difficulty with using the original brass 0.4 nozzle.

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