Ya, well, normally I'm pretty good at figuring out how to hold the work, but I'm having a prob now. I'ma new machinist with a Haas VF-3 w/probe and a manual lathe, and am making some small (Under 2") R/C wheels from 6061-T6. They are 2 pieces each: The front screws to the back and Viola-This is necessary because the tyres have a beadlock insert. So, I machine the back sides of the halves-Basically a 2" diameter stepped down halfway to a 1.5" diameter. I then cut some soft Al. jaws on my Anglelock vise and put the smaller diameter in it, and machine the faces. However, no matter what I do, they come out a tad off, about 12 thou: Now when you screw 'em together, the spokes do not line up perfectly, and not only the visual suffers but they'll wobble for sure, killing saleability. (I use the same X & Y zero from the soft jaws for the wheel program, so it should be dead center?) I thought it was jaw pressure moving the movable jaw in once I started gutting the solid wheel half, so just tightened it up as little as possible, to no avail. I've had this prob before & will again, so do any of you more experienced chaps have any thoughts? I have about 50 hours into CAD & prototyping, and have buyers waiting. As a 1-man shop with a Haas to pay for, farming this out is not an option. I know they should be lathe parts, but even if that were possible, my lack of concentricity milling would give me the same prob anyway! Please assist if you have an idea! I can post pics if this would be clearer. Many Thanks, Chris