Positron-LT Folding Low profile spool holder

This spool holder attaches to the top of the makerbeam on the Positron LT z axis. it consists of 3 printed parts:  The spool arm, the spool brace and the brace lock. 

in addition to the printed parts you will need :
3x m3*10 countersunk bolts (same as used in Positron LT construction)

3x Makerbeam T Slot nuts

1x m3*14 bolt (for the pivot)

1x m3 Heat set insert

short length (72mm) of PTFE tube (like the bowden tube) as a running surface.

print should be in PETG or similar which wont creap under load and of high infil/wall strength.

mount the brace lock with a gap of 6mm between the top of the brace block and the base of the folded out arm. this should allow the whole assembly to fold down flat