EC collet spring tool

[Occasional machinist]

On my lathe I have an EC collet chuck - a nice piece of kit if you can find one. However, my guess is it is around 50+ years old and the grease/ oil is getting a bit gummy. To remove the torsion springs in a controlled manner I devised a spring compressor especially for this application.
This video shows the final design, including removing and replacing some of the springs (and drawings for those keen).

This video shows the start of the development process