Another few pieces of the puzzle arrived, managed to assemble them together and get a little glimpse of the whole picture .) As previously, I’m amazed at the quality of the laser prints – SLS is an amazing piece of technology.
I have already added some of them on my Thingiverse page to download, rest will be added later today.
And here they are:
both X axis ends, one with stepper motor mount.
Z axis module, lower stepper mount, upper smooth rod mount, and an X-end in the middle
X axis assembled with short smooth rod – just for testing purpose
I’ve been looking at different printers, and noticed how many of them uses 608zz ball bearings as toothed belt pulleys, along with GT2 16 teeth pulley on the other side. Say I’m crazy, but I hate the way it …looks! GT2 pulley is less than 15 mm in diameter, while 608zz is 22 – which makes belt running non parallel to itself and smooth rods.
This was the reason I decided to do something about it – and designed a pulley to be mounted on a 623zz ball bearing (such a tiny, tiny one!).
So there it is! What do you think? I wonder if 623zz will live long enough .)
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.