Magnetic broom

[Paul Jones]

When I had my house re-roofed from sawed cedar shingles to a light-weight concrete tile (required fireproof replacement after the house next door burned down in a wildfire), the roofers used a form of magnet broom to gather up all the roofing nails from the cedar shingle tear-off operation. Removing the old cedar shingles dumped a bunch of short nails down on the patios and garden beds near the edges of the house. Similar to your broom design, their magnetic broom pick up 99.9% of the nails and worked very well. Thanks for posting and providing your source of magnets.