Prusa i3 MK2 Filament Filter with 4mm PTFE tube

prusaprinters

I got this design idea while using cocoknight's snap-on filament filter ( http://www.thingiverse.com/thing:2086804 ). It's well designed but I've different usage requirement. I need a filament filter that able to: Snap-on top of Prusa i3 MK2 extruder, but easily remove-able. Able to put an 4mm PTFE tube into it. So this is what design I came out with. I use idler as snap-on point. It seat secured enough as filament movement will push it downward naturally. And it's easily remove-able, all you need to do is lift it upward, which make unloading filament very easy (won't jammed with filter). On top you can insert 4mm PTFE tube into it. PTFE hole is (designed to) 4.24mm in diameter with 4mm depth. Then there is a smaller 3mm diameter hole below it act as stopper to prevent over-insert. In order to make it print-friendly, I put a 0.2mm single layer at the bottom of filament entry hole. You need to remove this single layer after print. Print Settings Printer Brand: Prusa Printer: Prusa Mk2 Rafts: Doesn't Matter Supports: No Post-Printing There is a 0.2mm single layer print at the bottom of filament entry hole in order to make it print-friendly. You need to remove this single layer after print. Category: 3D Printer Accessories