OO HO Model Railway Magnetic Chain Coupling 3mm Step NEM

So, why print your own? There are several good reasons: my design comes in more lengths, and you can get a more realistic gap between coaches and wagons by having a wider choice of coupling lengths. This design comes in four versions and has offset heights for the magnet, which is ideal for some rolling stock that has the NEM socket at the wrong height. Also, this design is designed to look like a chain, giving the coupling a more realistic look. The four versions are straight, 1mm step, 2mm st…

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