Broaching set ups

**BRADFORD** · 9th September 2012, 12:24 PM

Originally Posted by Michael G

The broaches I have are the type that are shimmed with bushes.
I had wondered about a hammer but thought that it could be a good way to break an expensive broach so I think that pushing with a jack is preferable. That does sound like some of the miners I have worked with though.
I did think about doing this on the lathe but as the tailstock only has 4" of travel, it was going to be slow going. I may try it anyway just for comparison. I only have one keyway to cut from new but might drill a few holes in some scrap just to try a few things out first.

Michael

What I meant was to use the lathe tool, no force required, pretty slow but it works and is a good way for doing a 1 off.

**RayG** · 9th September 2012, 01:04 PM

Hi Michael,

Maybe I missed it, but what was the reason you don't want to use your shaper?

Regards
Ray

**Michael G** · 9th September 2012, 06:22 PM

G'day Ray glad to have you back.
I didn't want to use the shaper simply because the bore was small and I didn't want to have to make up another tool for the shaper. The current keyway slotting tool I have is limited to around 5/8" bore diameter or larger. Using the broaches was quicker in this case.

Note to all - I managed to use the broaches on the lathe - and it worked alright. One thing I didn't mention was that the change gear was made of brass. I don't think I would have gotten away with it with a steel gear. Press coming up I think.

Michael

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