Toy Train

thingiverse

I became an uncle and decided to create some toy trains for my nephew. I was unhappy with the all-plastic models found on Thingiverse, so I made my own version using metal hardware and glue. Assembly Instructions ===================== Connector ---------- I use a neodymium magnet 10mm in diameter and 3mm high. The head is an 11mm decorative nail (Polster Nagel) with the pin cut off. A 5mm long brass pin, 2mm in diameter, helps glue it to the base. Wheels ------- The wheels are made from brass tubes, 2mm in diameter and 0.3mm thick, 29mm long, and 9mm decorative nails (Polster Nagel). I use some two-component epoxy glue under the head of the nail and inside the tube. Make sure the wheels have enough distance apart. The inner distance between the wheels should be about 22mm. I use two 1mm shims when mounting the wheels to the base. Alternatively, you can use the file wheel_plastic.stl and a 2mm diameter brass rod, 29mm long only. Bogies ------- Use an M3x12mm socket head screw to mount the bogies on the car. I directly turned the screw into plastic. Be careful when doing that and make sure the screw is perpendicular and not screwed in too far. The two bogies are aligned with two hook screws, 2x20mm (sometimes they're labeled 2.3x20mm). Hardware Sources ---------------- https://www.polstereibedarf-online.de/polstermaterial/polsternaegel/ https://archidelis.at/en/Metal/Rods/Brass-Rods/Brass-round-rod-2-0-L-1000.html https://www.obi.at/profile/rundrohr-messing-2-mm-x-2-mm-x-1000-mm/p/2088953 https://www.hornbach.at/shop/Polsternaegel-9-mm-vernickelt-40-Stueck/3831331/artikel.html https://www.supermagnete.at/scheibenmagnete-neodym/scheibenmagnet-durchmesser-10mm-hoehe-3mm-neodym-n42-vernickelt_S-10-03-N https://www.aliexpress.com/item/20pcs-Neodymium-magnet-10x3-Rare-Earth-small-Strong-Round-permanent-10-3mm-fridge-Electromagnet-NdFeB-nickle/32862438365.html?spm=a2g0s.9042311.0.0.3c524c4dUOmBg7