Retractor / Lift Spring Arms 15-40cm reach

Lightweight spring arms for lifting stuff that needs a little upward tug. Designed for extension springs that are about 14mm x 4mm OD at rest; I got mine from a dead printer or something and have no idea where you'd source them. You'll also need a 3x12mm steel dowel and 2 M3x12 grub screws, plus whatever you want to use to attach the ends to stuff (I used paracord).

I designed these to lift bowden cooling tubes, in the completely untested assumption that they'd provide a more nearly constan