Today I’ve received another part of the puzzle – the hotend. It’s a chinese clone of what I believe is called an E3D Hotend. It was one of the first parts I’ve ordered, I’m afraid I bought a wrong one, but I’ll write about it later.
Build looks quite nice to me – maybe pieces aren’t ideally clean, but everything seem to be in order. Parts fit nicely, inside hollow screw is made from stainless steel, drilled to 4 mm ID, and a teflon (PTFE) tube fills the inside. It’s supposed to allow frictionless moving of the filament inside the tube – and isolate ‘fresh’ filament from the nozzle heat before it gets inside the nozzle.