This print is designed to demonstrate conductive filament (Conductive PLA from
proto-pasta.com).
Using a single extruder 3d printer, half-way through the print the conductive PLA is swapped in allowing the bus bars to be printed that connect the inserted batteries into a circuit. A soldering iron can be used to heat up the LED's leads and melt them into the positive a nd negative conductive terminals as shown.
Insert AAA batteries in alternating fashion. The '+' (positive) side bump goes towards terminal ends with a thinner spring member and the '-' (negative) side goes towards the thicker terminals.
V4 - finally happy with this version, abandoned the LED lead holes and got enough spring in the positive terminal design to hold all batteries securely
V3 - made holes for LED leads even larger, still too small, adjusted terminals, still a poor fit, working on another terminal design for the positive terminal
V2 - updated adding a gap between terminals to allow for batteries of slightly different lengths to be better accommodated.
| battery_holder_v4.stl | 983.1KB |
