what you need
1. glue stick
2. pen (only need body and tip)
3. 3 springs
4. paper clip
6. tape (your choice)
7. screwdriver bit
8. nail or peg has to fit in pen body
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drill hole in pen
then add springs and peg
bend paper clip to pull pin use tape to make sturdy
push down peg and insert pin to hold down
glue cap to screw driver bit
put in open end tie string to pin and burry pen body half way in to ground then pull or you can just hold and pull pin