Tevo Tornado TPU Extruder guide

There are a few versions of replacement filament guides for the Tevo Titan but I just wasn't happy with any of them and wanted to minimise any gaps that could lead to bunching of TPU filament within the extruder.
I extended the guide to also fit in behind the Bowden tube fitting to maximise the support (probably overkill)
I also created a nice internal lead in chamfer to allow easier insertion of filament.