This pin is made for dropsetting during your workouts.
How to use:
Step 1: Slide pusher back
Step 2: Lock with arm
Step 3: Insert metal pin into desired weight
Step 4: Insert arm into the hole below
Step 5: Start your set
Step 6: Let go of the tension on the cable as the pin will fling itself out of the weight
Part list: This pin requires the following parts:
1x Arm
1x End cap
1x Housing
1x Pusher
2x Pegs
1x 130mm long 8mm thing iron rod
1x Spring
Assembly:
To assemble the dropsetting pin:
Step 1: Test to see if the pusher fits freely into the housing
Step 2: Align the square holes on the pusher with the guiderails of the house
Step 3: Glue pegs to the pusher
Step 4: Aquire and insert spring (I made my springs by heating up some 2.85mm filament and wrapped it around a metal bar)
Step 5: Insert metal pin into front hole (I threaded my pin and hole, but you could probably also just heat up the metal pin and melt it in place)
Step 6: Mount arm on the two pertruding pegs on the house