Discount Lee Valley Steel Cups For Rare-Earth Magnets

Magnet cups increase a magnet’s attraction, usually by a factor of four. These zinc-plated steel cups are counterbored to fit the rare-earth magnets we sell. The cup for the 1/4″ magnet has a ridged outer surface for a press fit into a 3/8″ × 1/4″ deep hole. The larger cups can be screwed directly to the face of the workpiece or flush mounted in a counterbored hole. The 1/2″ and 5/8″ cups are 1/4″ thick and countersunk for a #4 flat-head screw; the 7/8″ and 1 1/8″ cups are 9/32″ thick and countersunk for a #10 screw (to restrain the larger magnets’ greater attraction). No glue is needed; once set in the cup, the magnet has little chance of popping out. To allow future removal of the magnet or cup, first file a slot in the side walls for an access point to pry out the magnet. Sizes stated are the outside diameter.

Sold individually. Made in Canada.