I am not responsibly for any or a injure, or involvement with the law on your part, so think safety! Be sure to where proper protection and be sure to secure all protection
Step 1: Supplies & Tools
Heavy duty string, about 50 inches of so.
Lag bolt, be sure to git the heavyset available.
Lighter, to burn / cut string
Grinder, to sharpen
Step 2: Sharpen
Step 3: Time to Tie
Grab a spoil of rope and git the length of rope at least twice your arm length.
DO NOT CUT THE ROPE YET.
Grab the end of the rope your first started out with and begin ting it to the bolt, about 3 raps is enough. and then BURN the other end of the rope. cutting rope will leave the ends split and can undo the entire rope. burning cuts and binds them together.
Step 4: How to Use
Begin spinning slowly, starting out fast can make the dart move in unpredictable ways, and could hit you. If you ever throw the dart, and it was behind you. LET GO or the dart could hit you.
When the dart is spinning controllably in the air from your hand let go or the string with your spin hand. then your rope hand, or just the spin hand. and you will have a quick re throw for the dart.