Duet3d filament monitor mount for E3D titan

thingiverse

**PLEASE NOTE:** This thing is a work in progress - it is currently based entirely on theory and maths! I have yet to get hold of a sensor to verify that any of this actually works... OpenSCAD files will follow soon, once I've tidied them up a bit. This is a mount to attach a Duet3d filament sensor (https://duet3d.com/wiki/Duet3d_Filament_Monitor) to an E3D Titan (https://e3d-online.com/titan-extruder) when used in a bowden setup. It replaces the aluminium bowden adaptor and places the sensor in-line with the output of the extruder. There is a hole at the base of the assembly where an E3D press-in pneumatic fitting is intended to go, to lock the bowden tube in place. This differs from a lot of other designs in that rather than using a bearing to provide pressure against the hobbed insert, the bowden tube is instead notched using an 8mm drill bit (jig plans to come soon...) and pressure is provided against it using a "spring" printed from the flexible filament of your choice, adjusting the infil to suit the material in question. This provides the filament with as little chance of escape as possible (crucial with flexibles!). **Parts you'll need:** (apart from the sensor and printed parts...) 2x 623ZZ Bearing 1x hobbed insert 1x 16mm M3 hex bolt 1x magnet 4x countersunk 10mm M3 bolt First, insert the "spring" into its cavity. Then, assemble the bearings and hobbed insert as detailed on the Duet3d wiki page (https://duet3d.com/wiki/Duet3d_Filament_Monitor). This is then inserted into the housing from the front, magnet first. Once insterted all the way, the bottom bearing will sit up against the flange in the hole and the magnet should be flush with the base. The PCB is then screwed to the 4 small standoffs with the sensor IC under the magnet. The PCB is not enclosed to permit access to the connectors and to allow a clear view of the LEDs. Finally, the notched PTFE tube is slid in and the whole assembly is then fitted to the Titan.