Pinewood Derby Display Trophy

thingiverse

This is a pinewood car display. It is designed so that actual Pinewood car tops the trophy. This is a 5 part design that prints in 4 prints. I used gold PLA for the base and stand, silver for the hub and black and white for the tire. This is a customizer thing so you will need to be able to use Openscad. Load "round_text.scad" into Openscad and then edit the text between the vertical bars. Make sure there are 45 characters between the vertical bars and that your text is centered. Run the customizer which will create curved text on a donut shape. Export the STL with a name like whitewall.stl. Be warned that it takes quite a while (20 minutes) for this to render even on a powerful processor. The tire is two pieces that must be fused together. You will fuse wheel2.stl with whitewall.stl which you just created in Openscad. I do this with Microsoft's 3D Builder by loading the whitewhall, fixing its STL, loading the wheel2.stl, selecting everything and then pressing merge. I then export the merged wheel as an STL. Now you need to print everything. I find that the base prints best on its face rather than on its back. The hub prints on its back. The stand that supports the Pinewood car prints laying down with support. The tire prints best on its back with the whitewall up. This will print fine without support and the bridging isn't too bad. You do a filament change so that the top 2 mm are in white instead of black and this makes the whitewall. This is pretty easy to do with the Prusa slicer which supports filament changes. The stand that supports the pinewood car has a hole all the way through below the car. This is so that you can slip a pipecleaner through and bend it around the car's wheels. This will keep the pinewood car from sliding free of the trophy. The fit of all of the pieces should be easy and you won't need to force things together. You can use a little hot glue to keep it all together if things are too loose. If you need to add weight down low for stability, pack the base with modeling clay. https://www.youtube.com/watch?v=pbuxnmPTo4Y