My son's teacher asked me to make 1 cup of iron filings for the 4th grade class magnetism experiments. Sounds like a real mess. I was thinking of put some sheetmetal screens on the milling table to catch the filings and using a roughing endmill on really fine feed to grind up a round bar of cast iron I have.

• Magnets Iron Filings2958058 quantity: 1 manufacturer: DOWLING MAGNETS Product Type: Text Book Type. Dowling Magnets Iron Filings, 12 Oz, Grades 3-6.
• Iron-filings meaning Small fragments of iron, filed from a bar; used to visualize the presence of a magnetic field, and as a food additive.

Iron filings are very small pieces of iron that look like a light powder. They are very often used in science demonstrations to show the direction of a magnetic field. Since iron is a ferromagnetic material, a magnetic field induces each particle to become a tiny bar magnet. The south pole of each particle then attracts the north poles of its neighbors, and this process is repeated over a wide area creates chains of filings parallel to the direction of the magnetic field. Iron Filings are used in many places, including schools where they test the reaction of the filings to magnets. They are also used in some toys, most famously Wooly Willy, where they serve to mimic hair on a cartoon face.

See also[edit]

Iron Filings For Sale

• Coherer (Iron filings tube)

Iron Filings Experiment

Iron Filings Pure Substance Or Mixture