model railway G scale arched truss bridge
thingiverse
As the bridge's asymmetry bothered me, I mirrored it to maintain a sense of balance. To make assembly easier, I also tweaked the opposite side for smoother gluing. This is a G scale model railway Arched Truss Bridge, with only the sides printed - the base can be crafted from wood and then attached to the sides. The top supports enable the sides to be spaced 150mm apart. For this project, I used PLA+ on one side and standard PLA on the other; going forward, I'd definitely opt for PLA+ (or PETG) for its superior properties. This bridge spans an impressive 1000mm across.
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