About this 3D model
I designed this crawler frame because I couldn't find a frame that was simple enough to print, and that all the parts for my stock crawler fit in. This frame fits all the parts with no tape, velcro, and only requires gluing the two halves together, and using a paperclip to attach the doors. The stock ESC fits in the top of the frame, upside-down with the servo ports facing backwards, the battery enters in the back of the frame and stays in without velcro. I used a paperclip to attach the doors, just shove the clip up the hole in the bottom of the frame, through the holes in the doors.