I needed a screw terminal block for distributing power to my fans. Figured I could just design and print one.
6x M3 8mm bolts
12x M3 metal washers
3x 20cm lengths of 18guage wire
Smaller gauges of wire work, but will limit the amount of current you can pass through this terminal block. If you are placing this directly on plastic you don't really need plate 1. Its mainly there as an electrical insulator on metal surfaces.
Step 1 - Take plate 2 and put the six M3 nuts into the captive holes.
Step 2 - Place plate 3 over plate 2 so the captive nuts are sandwiched between them
Step 3 - Slide two metal washers onto each of the six M3 bolts.
Step 4 - Screw the M3 bolts throw the holes in plate 3 so that they just start to thread into the captive nuts.
Step 5 - Fold each of the 20cm wire lengths in half and form a loop at the fold; leaving about 5cm on either end of the wire straight.
Step 6 - Drop the two 5cm ends of each of the wire loops through the three holes in the center of plates 2 and 3.
Step 7 - Take the wire loops and form a figure eight around the bolts making sure that the wire ends up underneath both washers.
Step 8 - Using a pair of pliers grab the 5cm ends of each of the loops and pull till the wire tightens around the bolts.
Step 9 - Tighten the bolts till they are holding the wire loops in place.
Step 10 - Cut off the excess wire so it is flush with the bottom of plate 2.
Step 11 - Take plate 4 and place it on top of plate 3 so that it covers the holes and locks the wires in place.
Step 12 - Take plate 1 and place it under plate 2.
Step 13 - Screw the whole assembly down to whatever surface you are attaching it to through the two through holes on the sides