Chassis for Tamiya track and wheel set (and gear box) and arduino

thingiverse

I replaced the randomly scattered mounting holes with risers that are printed separately and acetone-welded into a pattern for holding an Arduino Mega, as well as six risers near the front for various items. In the images, not all the risers are installed, and only one battery holder is installed. I acetone-welded two battery cases for 18650 batteries, one on each side, such that they sit primarily between the tracks. Two acetone-welded supports help keep the holders in place. You can find instructions online for acetone welding. You can weld the risers onto whatever pattern you want, but there are insets for the pattern I used which makes them more accurate and stronger. They fit extremely tightly. When placing the battery boxes on, only overlap them by about 1/16 inch on the chassis. I also overlapped them slightly on one of the chassis "legs" to provide an additional point of contact.