Hi all,
I've been thinking about how solve the problem of raising and lowering the head on my round post mill without losing position.
I've come up with this double wishbone design: The clamp at the bottom fixes the rotational position. The upper wishbone is bolted directly to the bottom of the head (this could be tricky in practise).
ATM the design shows two ball joints on the upper wishbone at the mid-point, in reality I think just one would do and I will probably beef-up the whole upper wishbone design, so I can push on it with an electric screw jack (satellite dish postitioner) to lift the head.
I'd like to run it past you for comments before sawing/drilling commences. In particular I'd like to know what level of slop to expect in the rose joints.