| METAL-SAW HOLDER After prolonged use my metal saw became worn and needed replacement. The new blade has 72 teeth, a diameter of 70 mm, and a hole size of 24.5 mm, different from my old saw. A new holder was made to match the bigger hole size. Its design follows the design of the saw arbor described in Article Number 17. |
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1. Machining the CAP from free-cutting steel, diameter 30 mm. NOTE
See 7.5, below for an exploded view and the names of the individual
parts. |
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2. Using saw to check fit . A neat fit with no play is ideal. |
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3. Drilling 6.2 mm hole in CAP. |
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4. Trimming CAP while copper foil protects machined surface.
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5. Counterboring CAP for head of locking screw. |
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6. The BODY (SHAFT side) has been drilled and tapped to match threads of
shaft. The material is free-cutting steel, diameter 30 mm. |
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6.5 Exploded view of arbor. |
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7. Machining SHAFT from free-cutting steel. Blank size
of 14 mm is turned to 12 mm and threaded to mate with the BODY. |
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8. The BODY is threaded onto the SHAFT and locked with high strength adhesive
such as Loctite 2760. A fixed steady supports the BODY during boring. See Article Number 37 for more on the Fixed Steady. |
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9. After machining BODY, cut off excess and face end of SHAFT. |
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10. Completed. |
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11. Back view of the holder. |
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12. The new one is on the left and the old one on the right. |
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