This is a simple model of a railway platform. This design is based on pictures on the internet and does not model a specific platform.
This platform is roughly scaled for O-scale (O27) trains (e.g. Lionel). The design includes a platform, roof, roof support poles, and a set of stairs.
As built, the platform sits 32-mm high and is 170-mm long and 50-mm wide. You may want to scale it so that the platform is at a different height. When printing the bridge for other scales, suggested scaling is:
- for G (1:22.5), scale by about 200%
- for regular O-scale, scale by 113%
- for S, OK as is (i.e., 100%)
- for HO, scale by 65% to 70%
- for N, scale by 40% to 50%
- for Z, scale by 40% to 45%
The dimensions of the stl files are:
- overall height (including roof), 106 mm (4.17")
- width 50 mm (1.97")
- length 170-mm (6.69")
The design also includes a set of stairs. Two designs are provided: one with hand rails and one without hand rails. I was impressed that my Makerbot Replicaor2 successfully built the stairs with hand rails.
The fullsize version of the design was printed on a Makerbor Replicator2
- platform printed upside down.
- roof printed rightside up.
- separate builds for the body and roof
- scaled by 100% (see recommendations above for scaling)
- PLA (Makerbot filament)
- Printed: standard resolution, 10% infill, 2 shells, 0.20 mm layer height, 230C
- a raft was not used
- the design requires good adhesion of the roof with the build plate.
- the roof warped a little. i carefully used a heat gun to warm the plastic enough to bend it back into shape.
The only cleanup should be the stairs with hand rails. The roof must have good adhesion to the build plate. Otherwise, it's a simple build.
Parts list: no additional items needed
Assembly instructions: The posts are designed with rounded edges and are slightly undersized so they "should" fit snuggly with the platform and roof. Some fine tuning might be needed.
Some best practices for printing:
- optimize print parameters for your printer, filament, etc (only you can determine the best parameters)
- use good filament
- level your build plate prior to printing complex parts. it's worth the few minutes it takes. always level after removing tape, or if pulling hard to remove a part.
- make sure the build plate is clean.
- if using blue tape, stretch it tight when applying it to the build plate.
- if you have small holes in the blue tape, the parts should still print without any problems.
- pre-feed the filament 30 to 60-s before printing (i.e., run load for 30-60s)
- do not print several complicated parts in one build (do complex parts by themselves)
- I find that printing faster is better (probably so the filament can't ball up in one spot)
- when the filament spool gets low, the filament can be tightly wound on the spool and the filament may not feed properly... take special care...
- when a new spool is used, it is easy for the filament to jump outside the spool and then it will bind up later around the spool holder ruining your build
- make sure it is easy for the filament to enter the filament feed tube. others have designed spools, mounts, etc. for that purpose. i use a small rope that forces the filament away from the spool before entering the filament feed tube.
- make sure that there aren't any obstructions on the spool. many manufacturers feed the filament through holes in the side of the spool. make sure the material has been removed.
- if you hear clicking when printing, that may be a result of the filament wrapped around the spool and not feeding
- for the Makerbot replicator2, look at the blob a filament in the left front part of the build plate and then the trail of filament to the build location. there should be a glob, and the line of filament should be continuous and smooth
- one way to remove parts when using blue tape is to use a very thin spatula bought in craft-art stores (advice from youtube). get one with a wide, blunt front end (not long and thin). mine is 11 mils thick (0.011") and 20-mm wide at the front. a painting spatula/scraper in hardware stores won't work and may damage the build plate. (I use blue tape so I don't have any best practices for bare plates, heated plates or for other tapes like mylar)
- perform regular maintenance (grease, etc).
- when I continued to have problems printing even after performing maintenance, following troublshooting instructions, changing filaments, cleaning gears, cleaning everything, optimizing print parameters, changing temperatures, etc., I bought a new extruder assembly from Makerbot and it solved all of my problems.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, LGPL version 2.1, or (at your option) any later version of the GPL. see http://www.gnu.org/licenses/gpl-2.0.html
Woverine Boat LLC is providing this document and its contents on an "as is" basis and makes no representations or warranties of any kind with respect to this communication or its contents. Woverine Boat LLC disclaims all such representations and warranties, including for example warranties of merchantability and fitness for a particular purpose.
Version number 6.A (first distributed version)
Author : Wolverine Boat, LCC - firstname.lastname@example.org
Copyright ÃÂ© 2014 by Wolverine Boat, LCC
Created Feb. 15, 2014
Feb. 15, 2014 ... original version
Designed with OpenSCAD 2013.06
Model train info (approximate values and may depend on manufacturer (1" equals 25.4 mm)
G scale 1:22.5, track ~89.4-mm W x 18.0-mm H, typical car ~108-mm W x 157-mm H, car+track ~ 175 mm H, 1-ft = 13.5 mm
O27 scale 1:48, track ~50.0-mm W x 10.3-mm H, typical car ~54.8-mm W x 79.3-mm H, car+track ~ 89.6 mm H, 1-ft = 6.4 mm
S scale 1:64, track ~47.0-mm W x 13.6-mm H, typical box car 51.2-mm W x 67.8-mm H, car+track ~ 81.4-mm H, 1 ft=4.8 mm
HO 1:87, track ~28.5-mm W x 4.6-mm H, typical box car 36.0-mm W x 55.8-mm H, car+track ~60.4-mm H, 1 ft=3.6 mm
N 1:160, track ~16.0-mm W x 3.8-mm H, typical box car 20.3-mm W x 31.5-mm H, car+track ~ 35.3-mm H, 1 ft=1.9 mm
Z 1:220, track ~16.0-mm W x 4.7-mm H, typical box car 15.6-mm W x 21.9-mm H, car+track ~ 26.6-mm H, 1 ft=1.4 mm
(Lionel O track is 4.4-mm higher than O27 track). There are different G scales...I listed one common in the U.S.)
Disclaimer: This railway platform is not based on a specific prototype and there isn't a true scale for this item. The design is based loosely on Google images of railway platforms and not on anyone's design.