OldTools Archive
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271527 | Ed Minch <ruby1638@a...> | 2020‑07‑20 | Re: Weird spade bit |
Shipbuilders use a modern version of that for traditional *l*ctr*c drill motor. For enlarging an exisitng hole, orfor making a counterbore area around an exisiting hole https://twen.rs-online.com/web/p/counterbores/0131870/ Ed Minch |
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Recent | Bios | FAQ |