I've found Stuart list drawings under 'spare parts' for many of their models so you should be fine. **LINK** (scroll to the bottom of the list). ME is running a series on building the hammer at the moment although I've only seen part 1 so far. I like the idea of building one myself one day.

Edited By Rob Murgatroyd 1 on 28/12/2017 22:47:48

One nice thing about EN24 is that it doesn't distort or change size noticeably with hardening. You should be able to use EN24T for a couple of holes in gunmetal without issues.

If it does go badly, you can always clean up the cutting edges and get the broach up to the mid 50's HRC with an oil quench.

To be honest, the T condition EN24 machines much more nicely than the annealed condition. It's a bit grabby when annealed, but cuts cleanly (with straw or blue chips) in the T condition.

Hey Grandma! Do you know how to suck eggs?

Have any more of Mr Griffin's articles been published? (I've only seen the first one so far)

Hello Steve, did you make the Stuart steam hammer , how did you get on with it ?

I am about to start one,

Richard.