INSIZE 6558-63 Edge Finder for EDM SØ6mm Ball

This INSIZE edge finder locates workpiece edges for EDM work using a SØ6mm tungsten steel ball held to a diameter accuracy of ±0.003mm. INSIZE builds the spindle from non-magnetic stainless steel and adds a magnetic base, letting the finder sit on a machine table without clamps. As the ball touches the workpiece edge, the EDM machine's built-in buzzer sounds, giving the operator a clear, repeatable zero reference for the machining datum. It is an unpowered accessory suited to die-sinking and wire-EDM setups where an accurate edge position must be found before the program starts.