Im having trouble making these 3 parts fully defined. The first one is a basic number wheel.
The other 2 are mirrored bodies (apart from a minor modification) which I used the split tool the delete the other half. I think this is causing me problems getting it fully defined?
Thanks
In fact your sketch IS fully defined. If you just try to drag - violent - one of the line endpoints, the sketch suddenly shows fully defined. A minor but - yes, but not unheard of.
The other parts are dependent on the assembly. It is the only way they "know" how to look. You can however Lock or Break the reference. Right click the Cavity feature and select List External Refs.