Yes, well spotted. We not exactly heavy users of OneCNC but it is a very useful tool. We only have the basic package, typical user, for generating tool paths for our Bridgeport VMCs. Most of our programming though is done on the machine tool itself. Sometimes we get sent Solid Works models and it's handy to be able to 3D visualise them. I also use it for our turning machines, generating the intersect points for blended rads and tangents etc, and also creating drawings for future reference.
I drew the hanger as you would view it from the side of the bike, but wanted to machine it upside down, so we checked the profile would run, then mirrored to to cut the actual part. See the photo of the alum block on the mill.
I measured (and guessed a fair bit) the frame and dropout to create the geometry and profile for the replacement part. Machined the basic shape only, just to see if it fitted, tinkered with it a bit and then machined version 2, seen in the photos, the one without the cutout for the mech itself. In one of the photos it's just held on with BlueTack.
It looked like it would work so we did another one, version 3, with the tapped holes etc. Flipped it over and milled the scallop at the bottom to accommodate the mech. With the step both sides, it puts the mech back where it should be relative to the frame/cassette. Worked fine.
Thought about phoning Fisher Outdoor to see if they'd got any more broken Looks (Ii think the 695 has the same arrangement?). I'd quite like something in 'Mondrian' colours!
