Tool Talk

What's-It Forum => What's-It Forum => Topic started by: swervncarz on April 23, 2013, 03:16:41 PM

Title: what us this bit for?
Post by: swervncarz on April 23, 2013, 03:16:41 PM

I have a whole box full of these & have no clue what they are for. I'm assuming they would be used by a machinist. But what are they? They look like some sort of drill bits. I had a hard time getting a clear pic hopefully you can make itout.
(http://i286.photobucket.com/albums/ll88/swervncarz/0423131609_zpsbe49a65e.jpg)
(http://i286.photobucket.com/albums/ll88/swervncarz/0423131609a_zpse28cc127.jpg)

Title: Re: what us this bit for?
Post by: wvtools on April 23, 2013, 07:55:47 PM

I cannot tell the scale, but it looks like a jeweler's broach.  Are they long and skinny with a faceted tip?

Title: Re: what us this bit for?
Post by: swervncarz on April 25, 2013, 02:04:24 AM

Thanks for the help! I just showed them to a friend at my work, he knew exactly what they were...they are taper pin reamers.

Title: Re: what us this bit for?
Post by: Billman49 on April 25, 2013, 04:36:13 AM

Watchmakers, clock makers etc used these to ream out pinion holes, bushings, taper pins etc - also known as a Lancashire reamer or pin broach in the UK...