Working with Neodymium Magnets
How Do I Use PVC Sewing Magnets?
Hidden closures for purses, bags, wallets and clothing: how the + and − marks work, which side faces out, where to stitch, and how to wash and dry them.
Can I Use Metric and Imperial Screws Interchangeably With Countersunk Magnets?
No. Inch flat heads are 82° and metric ones are 90°. Some sizes are close, such as M4 and #8, but a mismatched angle can crack a magnet.
How Many Magnets Do I Need to Hold My Item?
Aim for total pull force of at least 1.5× the weight for straight-off loads and 7 to 10× on a vertical surface. Our calculator does the math.
How Do I Install Countersunk Magnets Without Breaking Them?
Use a matching flat-head screw, drill a pilot hole and stop as soon as the head sits flush. Tighten by hand, or with the drill clutch set low.
How Can I Keep a Magnet From Sliding Down a Vertical Surface?
Only friction holds a magnet on a wall. Add a ledge, add grip, use more total pull force, spread magnets out and keep the load close.