MOPB - train tunnel (LEGO compatible)

thingiverse

(Update! Fixed a bug with the studs on the arches and with distance of the 1-0-4 - make sure to download the latest version!) These are several LEGO-compatible tunnel entrances for trains. For roads, find a tunnel here: https://www.thingiverse.com/thing:3490244 The surface has a well-known stone structure or is flat, and the jambs consist of three 4x2x3 blocks each. The bottom has additional crossbars for more stability during printing. The STL files always refer to the number of tracks, the distance between them, and the distance at the edge. A 2x8-8-4 file thus contains 2 tracks, each 8 studs long, with an 8-stud gap in between and 4 studs on either side. This results in a tunnel inner width of 32 studs. Since there are two jambs with two studs each, the outer distance is 36 studs. The STL files I uploaded should meet most common needs because the tunnel was designed using OpenScad and can be configured as needed. If you need different distances, just let me know. Comments are welcome - especially about how well the bricks fit in your prints!