4mm Bowden Tube Clamp With 6mm Hex Cutout - Fitting Replacement

thingiverse

This is just a slightly modified version of ProtomakerSprint's 12mm Bowden Tube clamp, found here: https://www.thingiverse.com/thing:2537458 I simply added a 6-sided cutout in the bottom of the nut grip part so it would firmly push down into the 6mm hex nut on my printer's carriage, effectively replacing the pneumatic fitting holding the PTFE tube in place. This grips onto the PTFE tube perfectly and has not reduced my extruder's performance or print quality despite that, as ProtomakerSprint points out in his original post, this fitting presses onto the PTFE tube more than a standard pneumatic fitting would. It's perfect for people that were stupid like me and forcefully ripped out the PTFE tube because they didn't understand the concept of a fitting (in my defense I tried pushing down on the plastic part of the fitting like you're supposed to, it was just clamped too hard to come loose). I personally prefer this anyway since now I have direct access to the hotend and don't have to take the whole thing apart to unclog it anymore, and it is easier on the PTFE tube than the standard fittings that came with my printer (they have dug into the tube quite a bit). This was modified to fit my Wanhao Duplicator i3 Mini, but I imagine it will work perfectly on the Monoprice Select Mini printer V1/2 as well. It should also work well for securing onto any 6mm hex nut, so can be applied to any other printers using those. In my case, I had already (accidentally) removed the black plastic part of the fitting, but if you haven't I'd recommend doing so to get a much tighter fit.