Thanks for the links etc., to the Bonelle, I've downloaded the plans and will study them. Looks impressive. I will also look at the Colyer/Caseley if the digital archive holds iss. 179

There is a seed of a 'cunning plan' in my mind… My mill already has the X-Y-Z axes of sufficient accuracy, and more than enough travel. A rotary table could provide the radial indexing. If I made a wheelhead attachment which fitted to the top section of the mill's knee dovetail then all I would need is some method of providing angular adjustment (in 2 axes). I would be using a diamond cup wheel so there wouldn't be lots of grit thrown around, but of course I would still need to protect the machine during grinding operations.

…now I'm sure someone will point out that J.Bloggs already did this back in 1923 etc., but it's a new idea to me

These all look like workable solutions to the basic problem, yet all different You chaps are obviously typical Model Engineers – inventive problem-solvers. Makes me feel I'm being lazy in looking for an off-the-shelf solution.

I can dedicate an area about 2ft square to accommodate the whole thing, anything larger would start to get in the way of other tools so the more compact the better. I was originally looking at the little Universal Tool and Cutter Grinder sold by (amongst others) RDG **LINK** which fits the size requirements but has not received particularly good reviews (and sells for less than half the price in the US). Pity that, but it wouldn't do any more than most of the solutions described above anyway. I suspect in the end I will cherry-pick the ideas and features found in the designs invented by others and from that cobble together something that suits my needs.

Thanks for all the suggestions!

I've had a root about in the workshop cupboards and came up with this combination, I'm thinking it may be the basis for cutter grinder? The Myford swivel slide has sat in a draw for years – not used it since buying a mill. The quick index head is part of the GHT dividing kit I made, and the collet chuck is off the lathe. The center bar could be used to locate the cutter flutes (somehow). Maybe if this lot were bolted to an X-Y table I would have the axes of movement required.