Printable Useless Box with GM3 Motor

thingiverse

Initially, I came across an online image of a box and was inspired to create one myself using available parts. The motor I employed is a GM3 geared DC motor with a specifically designed motor mount and arm. To enhance visibility, I added two LEDs with fiber optics extending to the fingertips. For those interested, an updated video showcases the modified arm compatible with the GM3 motor, although the end requires further adjustments for optimal fit. You can view it [here](http://www.youtube.com/watch?v=3BuKqM7dn7g). To recreate this project, print either the Fullsize box (for larger printer beds) or a combination of Box_SmallBed_Left and Box_SmallBed_Right for smaller beds - these files represent the base of the box. The Lid and Led Arm sides require separate printing. The Lid side includes an indentation to securely hold a DPDT switch in place, which might need slight modification based on your specific switch. Meanwhile, the Led Arm side houses the LEDs. A GM3 Support Bar is designed to secure the motor within the box using 6-32 screws. The GM3 gearbox fastens to the bracket with 4-40 1" screws, utilizing two sets of holes, only one of which is employed in this case. To install the limit switch, a Radioshack model with a roller end is recommended. It attaches to the Limit Switch Mount using a single screw. Adjust the angle as needed to determine when the motor stops. To secure it, superglue the mount against the arm side of the box, following the designated placement in a provided photograph. The Motor Arm Spacer helps bridge the gap caused by the GM3's protrusion. Ensure the flat side faces the arm and the recessed side faces the gearbox. Printing the hand without cooling is advisable due to potential overheating of the fingers. Glue the finished hand onto the arm using superglue. Two rectangular LEDs (from Radioshack) can be installed on the Arm, with fiber optics connecting them. One LED should face backward when lit for polarity reversal purposes. Consult the original project for a diagram detailing motor and wiring mechanisms. Secure the arm to the motor using a small self-tapping screw. Adjust the limit switch and motor settings until the lid closes perfectly, with approximately 1/4" of space between the hand and the bottom of the lid post-shutdown.