| Brand | Custom Made |
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Check the listing for details. Lathe Tool Bit Grinding Jig, 60 Degree Grinding Jig for 1/2" Thread Cutting Bits. Condition: New. Listed at 41.99 USD. Here is a small handy grinding jig that is easy to use. Set your grinder tool rest at 10-15 degrees. Clamp the tool bit in the jig, and work the jig back and forth across the grinding wheel keeping the face of the jig and the face of the wheel parallel to each other.