David P Best:
PM936 Lever Selector Handles
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Factory supplied knobs
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Starting with 3/4" Aluminum Round Bar
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Shear Hog used to make a flat spot
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Flat spot for drill/tap operation
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Drilling with #7 drill bit to 12mm depth
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Bottom tapping that hole with 1/4-20 tap
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Rotated the part 90-degrees in vise
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Shear Hog used to progressively cut the fingler-pull areas
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Ready for round-over operation on lathe
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Ready for round-over operation on lathe
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Turning mandrel setup - 1/4" Cap Screw in collet
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Chucking T-handle to turning mandrel
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Using 3/4" carbide round-over router bit as form tool
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Relieving the back areas of the finger slots
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Ready for deburring
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Ready for deburring
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After deburring and polishing with Scotch Brite wheel
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Back Gear engagement selector handle
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Power quill feed selector handle
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Quill power feed engagement handle
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Work like a charm - next step is hard anodizing
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New handles upper levers
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New handles upper levers
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Spindle Brake Handle
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After Hard Anodizing
David P Best:
After Hard Anodizing
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Local (to Portland Oregon) anodizing service results