Designed this little guide bracket to prevent TPU filament from jumping off the rear mounted auxiliary feed spool, particularly with a full spool.  When it jumps it can wind around the spool support and disrupt the print, this little guide prevents it.

Attaches to the back of the printer with a few pieces of 20mm wide double sided foam tape and uses a spare bit of Teflon tubing to connect to the extruder feed coupling.

Printed in lava grey PLA-CF.