Re: Adventures in Finding Small Files—an update
I have worked as a watchmaker, and my broaches all work in a rotary fashion. Broaches are also slightly tapered, so you have to use it from both sides of the hole to get straight sides. It could not be drawn through a hole without twisting.
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-------- Original message --------
From: "Charles Peck lnnrr152@... [STMFC]" <STMFC@...>
Date: 7/28/16 6:27 PM (GMT-05:00)
Subject: Re: [STMFC] Adventures in Finding Small Files—an update
Bill, perhaps watchmakers use the terms differently but as a machinist, reamers and broaches work differently.
Both modify the size or shape of a hole but a reamer cuts with a rotary action. A broach is pushed or pulled
through a hole cutting in a linear fashion.
At least this is true of all that I have used. I now expect someone to come up with the exception.