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Edward Lowton
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Core ejector
25 May 2015
L.S. Starrett’s new Core Ejector for bi-metal hole saws has been designed to effectively remove the slug of material that usually ends up inside the cup of the hole saw once it passes through the sheet material being cut.

Comprising a precision tapered spring and an aluminium pressure plate, the Core Ejector has been created to improve productivity and efficiency, as well as operator health and safety.
As the saw cuts into the sheet material, the aluminium pressure plate compresses the spring inside the cup of the saw. When the saw breaks through the spring will act on the pressure plate as it returns to its natural open state, effectively ejecting the disc of raw material before it becomes trapped.
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