delta type printer rod tension spring

A simple clip-on tension spring for my Micromake delta printer's diagonal rods. Helps with the backlash of the ball joints and reduce z-wobble/shifting.

It probably won't fit other printers, but perhaps it might give you some inspiration?

Update: Word of caution - I've tested this over a few days and I noticed that it is less springy now, i.e. it might not hold up over long term use.