Used a ferrite ring magnet to pickup nails and screws in the yard.  This model holds the magnet level to the ground, protects the magnet, and makes cleanup trivial.

Printing

• PETG
• 15% infill is fine
• No brim or supports
• .20mm layers

Requirements

• Ferrite ring magnet, inner diameter 75mm, outer diameter 150mm
• String
• Dowel (for handle)

Assembly

1. Thread a string through the stopper, tie a knot
2. Thread the other end of the string through the magnet holder
3. Wind the string (at desired length, approximately hip height) around the dowel and tie a knot
4. Place the ferrite ring magnet in the magnet holder
5. Express shock as you walk around your yard and find more nails than one might reasonably expect