Click to pick up and move the iron filings. Press space to "drop" the filings and get a new batch. Up arrow strengthens the magnet (better for moving large batches). Down arrow weakens the magnet (better for fine adjustments). Press C to clear and start over. Have fun!
Inspired by the magnetic toy developed by the Smethport Specialty Company. https://en.wikipedia.org/wiki/Wooly_Willy
