N scale multi-arch bridge for resin printing

[GGNInNScale]

Hi to all I designed a section of arch-supported bridge, with guard rails and bracing (prevents warping and deforming during printing). The file is in .stl format, open for download and modification. No commercial copies per Tinkercad rules. Thanks. I printed this without supports in my Mono2. Connect two or more for spanning, change the arch heights, too.


https://www.tinkercad.com/things/drfg49rT2nb-arch-bridge

[John]

Are the arches just for support until after curing.  Or part of the design?

[GGNInNScale]

Hi they are part of the design.  I printed a couple without any supports.  They stayed on the build plate (I was a bit concerned, but it worked fine).  I added the cross-bracing to make sure the lanes stayed flat.