This is one of my bored garage ideas. They are pretty lethal to a dartboard or piece of wood.
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Step 1: Parts Needed.
7 nails of your choice. Make sure 4 are the same kind
Step 2: Cut Head of Nails
Step 3: Bend 1 Nail Into a 90 Degree Shape
Step 4: Tape Nails
Tape nails as back to back with a third nail as a scab to hold them together. Repeat and put two pieces perpendicular to one another. Put 90 degree nail in place and tape it all up. You're done. Don't hurt yourself or the innocent!!