Gantry crane for wooden trains (Brio compatible) piston replacement

This is a remix of the piston of the gantry crane (https://www.thingiverse.com/thing:4621700/remixes) for wooden toy trains. The original had very delicate structures which break off too quickly. So i designed a piston with a smaller magnet (6x3mm), wich still is sufficient in term of pulling force. That made room for thicker structures wich do not break off easy.
Happy playing