Magswitch 8100238 MagSquare 400 Switchable Welding Magnet 40mm

The Magswitch MagSquare 400 is a switchable welding and fabrication magnet designed to hold workpieces securely at precise 45° and 90° angles during welding, assembly, and metalworking operations. With a holding force of 400 lbs and a compact 40mm form factor, this tool delivers professional-grade magnetic clamping that can be turned on and off with a simple twist of the activation knob—eliminating the struggle of removing traditional permanent magnets from your workpiece.

Unlike conventional fixed magnets, the Magswitch technology uses rotating internal magnetic arrays that allow the user to fully engage or fully disengage the magnetic field on demand. This means no residual magnetism, no metal chips clinging to the magnet, and no wrestling the tool off your steel components after a tack weld.

Key Features:

• 400 lb (180 kg) switchable holding force for heavy-duty fabrication work
• 40mm body size — compact and easy to position in tight spaces
• Precise 45° and 90° angle faces for accurate joint alignment
• On/off magnetic switching — no residual magnetism when switched off
• Durable cast body construction withstands shop environments
• Works on flat, round, and structural steel stock
• Ideal for MIG, TIG, and stick welding setups
• Reduces setup time and improves weld accuracy

The MagSquare 400 is a go-to tool for professional welders, metal fabricators, and ironworkers who demand reliable, repeatable positioning with the convenience of instant magnet release. Part number 8100238.