John S,
Mine does have the sliding head, but no machined area at the back to bolt things to. I think it is designed more for the machine to be used like a radial arm rather than a two headed machine. Besides, even if it would fit, the way the machine is sited, I don't think there is enough room to swing the head around by 180 degs. I have enough trouble swinging the cat.
John H,
Being able to use Sally would be great, but the cost of air fair is a bit offputting.
I have yet to make the slotting tool, but I already have the designs for it in my head. Normally it would be used on the lathe, but to do this job, it would need to be able to work on the mill, so as usual, with my interchangeable tooling idea, I will need to mount the lathe compound slide and toolpost onto the mill, to give me the adjustment for cutting when the part is mounted into the dividing head.
I suppose I could use the mill's own quill as a slotting head, but I don't fancy the idea of loading the quill like that, plus I would have to fix up some method of stopping the spindle turning, and it might be very tight on throat dimensions as well. So that idea hasn't even been considered past the thought stage.
As one problem is solved, another one rears it's ugly head. But what would life be like without it's little problems.
John