A very simple bolt launche that requires very few, common pieces and shoots a good distance (distance varies with rubber band strength and weight of bolt).
The pieces I list here are the bare minimum and most pieces can be interchanged with others in case you are short on pieces. Feel free to add more pieces to it to make it more fancy, elaborate, practcal, etc.
Pieces required for the launcher:
All connectors can be interchanged. What I list here is what I used in my version.
2 silver spacers/6 blue spacers/2 dark grey or black connectors and 2 blue spacers
1 tan clip connector/orange rail piece
Step 1: Building the Front and Middle.
Step 2: Building the Back and Trigger System.
Spacers with pieces
Orange rail piece thing/tan clip connector
Step 3: The Bolt
This bolt is very simple, cheap, easy to build, and requires a few common household items:
3 toothpicks (preferably same size ones)
1 normal plastic bendy straw
For an instructable on how to build a better bolt, check out my Cheap Dart.
Step 4: Loading and Firing
To prepare to load, place the rubber band around the orange/red pieces in front and pull it back until it fits on the orange rail piece thing/tan clip connector on the trigger.
To load, fit the back of the bolt into the rubber band at the back snuggly so that it doesn't drop and place the tip of the bolt onto the rubber band around the orange/red pieces in the front.
To fire, simply place one hand under the green connectors in the front and around the black/grey rods. Place your other hand around the yellow rods in the back and pull the trigger (blue rod).