I'm using a micro-mill, the table is around 200x90 (mm) with three grooves. I'm currently using a small claming kit. I'm drilling/countersinking/counterboring into small rings, generally 65mm in diameter (max) and down to 42mm minimum diameter. These are generally 4-8 holes, which need to be countersunk or counterbored. The rings are only 1-3.5 mm max in depth, usually, and they're almost always aluminium. In order to get things lined up correctly, it can take quite a while. I have to adjust the clamps and move things around each time usually.
If I have projects where I need to do over ten of these (as well as lots of other related work) it's just very time consuming, and I generally end up breaking it up (time wise) when I believe it could all be done in one go with the correct mounting.
I've thought about a rotary table & chuck, however, I do not believe I would be able to grip the rings well enough without warping them. What do you think?
I thought about a larger table, without a chuck, and just using clamps, but I just don't think that is possible.
Is there another solution that I've not thought of?
Thanks for any advise
