from The Century Dictionary and Cyclopedia
- n. A cut made in a spiral direction; specifically, a spiral cut in the tip of horn to form a plate which, pressed out flat, may be used for comb-making.
Sorry, no etymologies found.
The boss is then screwed and secured with Loctite adhesive into the bore of the main wheel and then finish-turned as an assembly with the addition of a screw-cut thread on the OD.
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