Come 0n Jim surely you recognise a video running in reverse ?
Where do I buy those springs from?
You do not buy them . They are already in your shed in that magical spot under the bench . They got there from that job you did years ago and at the last second they went ping never to be seen again . They accompany the ball bearings and minute part the buffing wheel gave wings to .
All those things come together in the dark to create perpetual energy
Cheers
Dennis