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stevieturbo

3569 Posts
Member #: 655
Post Whore

Northern Ireland

8th Apr, 2021 at 09:33:13pm

That's just a variation of a holesaw, albeit looks like it has carbide tips in it for hopefully a cleaner cut. As regular HSS holesaws are pretty terrible.
Haven't actually tried one of those yet.

First google of "rotary broach" brings up this, drills for mag drills. Or the term "rotabroach" is also common.
Seems there are lots of variations, or rotary broach can mean something different altogether.

https://uk.rs-online.com/web/p/magnetic-drill-bits/5067430/

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

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