Well, I managed to assemble a couple of pic's to support my keyway post.
The exercise of creating the two keyways and making the key took about 1 hour all up and I was not in any hurry.
Apologies that these pic's are no particular order.
The broche is the toothed bar, then you have the guide which is the round cylindrical piece and the shim.
The broches are ordered according to the width of the teeth, the guide is ordered according to the hole diameter and the shims control the depth of the keyway depth and are added only after a first cut is made by the broche.
I found one shim depth was sufficient for my work.
You can look at the whole process of broaching via a YouTube search.
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Russ.
https://www.youtube.com/watch?v=5GQ8Ujaq7MY
The more that you learn, the more your realise that you don't know...
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