Workholding -- itty bitty polycarbonate cones

[BaronJ]

@BaronJ : You're assuming I'll make the big flat first, and then machine the rest. I'll think about whether that's the right approach.

I had been thinking that I'd machine the little flat first, then the cone, then I'd glue the thing into a fixture with conical holes in it and finish off the big flat. Obviously it requires a fixture and makes the use of the paper sheet impossible -- so I'm seeing definite advantages to doing it your way.

I'd have to figure out how to machine the cones if I did it your way, though.

Hi Tim,

Years ago I used shellac and a similar technique to secure industrial diamonds for machining. The ground flats were held on the face of a rotating mandrel so the points of the cone were ground accurately centred. You could do the same to make the cone. I'm assuming a symmetrical pyramidal shape.