Lovely models, sadly the trains are so large that they are virtually unusable. I have tried to slice the models into say four pieces but just cant find an easy way to do it. Whilst it is said that a 300 x 300 would do it wont, the models are far bigger - i have some of the bigger printers such as the JG MAKER - 320x320. Likewise if the models had been split then you could have printed without supports - the openlock doesnt refer to the trains it refers to the platform pieces. Would love the author to slice the trains and fit the openlock into it. Live in hopes.