Hey Mud. Received a couple of rings in the post. Working in middlesbrough til Friday though so will trial fit them at the weekend and let you know how they fit.
Can't remember what I've got already made, but can make more...subject to whatever colours I have to hand and not sure I've much/any acetone left for smoothing.
Can anyone confirm they fit? Don't think I got any feedback, and can tweak the geometry if necessary.