Gravitrax Long Rail (for small print beds)

thingiverse

It seems people create Gravitrax pieces tailored specifically to their own printer. I'm no exception! My print bed is only 140mm, so to print long pieces, they need to be segmented. To this end, I have designed these Gravitrax long bridges in convenient 120mm spans (or two Gravitrax units). It is extremely strong and prints without the need for any support structure and very little waste or cleaning up after printing. On request, I have added a 60mm middle span so that any size from 4 upwards can now be spanned. I have successfully printed a span of 10 Gravitrax units joining two ends and three midpoints without gluing or finishing the pieces at all. I am confident it will go much further if you finish the edges and glue it. I will update this as I print more spans. This bridge does not have the "Wings" the original pieces have, so I would imagine that if you're hitting this at speed off a corner, the ball might fly off. You might need to use some original spans to get the ball going in a straight line first... Just experiment! Anyway, let me know how you get on with it - this is my first Thingiverse addition! Cheers, Rob. P.S. I would love it if you posted up your makes just to see how it's working for you.