Model Railroad, Covered Bridge by wolverineboat 3d
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Model Railroad, Covered Bridge by wolverineboat

Model Railroad, Covered Bridge by wolverineboat

by Thingiverse
Last crawled date: 2 years, 12 months ago
This is a model of a covered bridge for model railroads. This design is based on pictures on the internet and does not model a specific bridge.
This bridge is roughly scaled for O27-scale trains (e.g. Lionel). The design was as big as I could make it for a Makerbot Replicator2 with a build volume of 11.2"L x 6.0"W x 6.1"H (284-mm L x 152.4-mm W x 154.9-mm H)
As built, the bridge can handle an O27 scale train but it is a very tight fit. You'll have to have at least one straight track outside of the bridge. At full scale, the bridge opening is 65-mm wide by 102-mm high. When printing the bridge for other scales...
for O27, scale by 105% to 110% if your printer has a bigger build volume (an O-scale probably won't fit at 100%)
for S, 100% is a good size
for HO, scale by 65% to 70%
for N, scale by 40% to 50%
for Z, scale by 40% to 45%
A full-size bridge took me over 20 hours to print.

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