La Platine Verdier
I noticed that many of my Platine Verdier's pirates had a problem with the magnetic system.
Generally the repulsion force is not adequate and it is necessary to complete it with a ball spindle or any other samarium cobalt magnets on the top of the axel. That situation is boring because some of the customers turn away ignorant they are facing copies and believing that the device is defective, bad designed or bad developed
To give a cure, I am going to indicate my pirates how to build magnetic circuits. The problem is that they use an ordirlary steel high carbon tenor.
On magnetic point of view that metal is certainly provided with a weak "coercitive field", but too much important, which decreases the field provided by the magnets. The answer consists in using a magnetic alloy of suitable quality, for example TELAR 57 of ARMCO. when the tooling of the part is over, you have to realize a double fire under vacuum to eliminate the last carbon traces.
And then, to finish, you can paint. the magnetic circuits or realize a surface processing as "zincage bichromatage" which gives that lovely gilded colour. of course that is really more expensive and complicated than ordinary scrap-iron, but now you don't have any excuse.