Deutsche Bundesbahn MDyg986 "Behelfsgepäckwagen" - Gauge 1 (1:32)

prusaprinters

<p><a href="http://www.modellbau-wiki.de/wiki/Behelfspersonenwagen">http://www.modellbau-wiki.de/wiki/Behelfspersonenwagen</a></p><p>A MDyg 986 in gauge 1 (1:32) will be ~700 mm long.</p><p>Luckily the Deutsche Bundesbahn MDyg986 "Behelfgepackwagen" is very symmetrical.</p><p>I "only" needed to design a quarter of this express luggage wagon, and copy it on 2 axis. ;-).</p><p>The parts fit only just on the build plate of a Creality CR10 (300 x 300 mm). Place the part diagonally, and minimize the "skirt" in your slicer software.</p><p>For the proper alignment of two "quarter" model parts", 3 mm alignment holes are designed in the floor, roof and walls. I glued in 3 mm pieces of metal wire.</p><p>All parts are glued with CA glue prior to painting.</p><p>Spring loaded coupling rods designed. The Marklin style gauge 1 coupling is modified from <a href="https://www.thingiverse.com/thing:1605582">https://www.thingiverse.com/thing:1605582</a>.</p><p>Window insert from plexiglas are routed.</p><p>I know my design is not perfect up to the last minute detail. I did not count and draw ALL the rivets, bolts, etc...... It was never my intention to be 100% accurate.</p><p>My goal was to make a model that leaves a good impression of the MDyg986 Behelfsgepackwagen. I think I've managed just that ;-)</p><p>Update 21AUG2018:</p><p>Published final design.</p><p>Update 11NOV2018:</p><p>Several additions made to make assembly easier to achieve a more stable model.</p><p>The side walls is fitted with 2.5 mm holes to tap M3 threads. In the body screw holes are present to screw the walls to the floor.</p><p>The end wall is to be glued between the side walls. The roof is attached to the floor by M4 screws, while resting on the walls.</p><h3>Print Settings</h3><p><strong>Printer Brand:</strong></p><p>Creality</p><p><strong>Printer:&nbsp;</strong></p><p>CR-10</p><p><strong>Rafts:</strong></p><p>Yes</p><p><strong>Supports:&nbsp;</strong></p><p>Yes</p><p><strong>Resolution:</strong></p><p>0.1 mm</p><p><strong>Infill:&nbsp;</strong></p><p>33%</p><p><strong>Filament:</strong> REEL Filament PETG Whatever</p><p><br>&nbsp;</p><p><strong>Notes:</strong></p><p>&nbsp;</p><p>For thermal stability, it is advised to print all parts in PETG, ASA, etc. Using PLA, your wodel will warp in warm summer weather.</p><p>When orientating the parts at 45' the "zig-zag" pattern of the "iron" feature in Cura results in a smooth surface finish. No filler is required, just a primer will do.</p><p>A brim is needed to keep the roof stuck to the print bed.</p><h3>Post-Printing</h3><p>To build this model, you need to print and assemble:</p><ul><li>Undercarriage: 2 x FLOOR, 2 x COUPLING ROD and 2 x BUFFERS.</li></ul><p>Tap M4 screw thread in the mounting pins for the bogies.</p><p>The bogies are "Schwanenhals Drehgestellen", made by Hubner.</p><p>The coupling rods slide over the mountin pins. Some spacer are required. The coupling rods are pulled to the middle of the wagon by small springs.</p><p>The Marklin style claw coupling is sprin loaded.</p><p>Use a suitable primer before the parts are painted in the final color. (Satin black, RAL6020 Chrome-oxide green and grey for the roof).</p><p>No surface preparation is needed on the walls. The "ironing" of the surfaces in Cura almost eliminates the visibility of layer lines. They are concealed completely by the primer.</p><p>The roof needs some primer/putty to achieve a smooth surface.</p><p>&nbsp;</p>