Small Slitting Saw Holder

A arbor is made for holding small slitting saws, one of the many ways of making  graduation marks.  For additional information on saw arbors, see Article Number 17.  

1. The left saw has a diameter of 20 mm, a bore of 6 mm, and a thickness of 0.2 mm.

The right saw has a thickness of 0.1 mm, too thin for making good-looking graduation marks.

2. The arbor disassembled.  

The boss on the arbor has been carefully machined for a tight fit of the saw blade to minimize  runout.
3.  Accuracy is maximized  by machining the arbor without removing it from the chuck.
4. Machine a small relief groove at the junction of the shoulder and mounting boss as shown in the diagram .

5. Slitting saw being use to engrave graduations.