I've been asked by a mate if I could make a few pairs of these items for him as they are horrendously expensive to buy. They're handlebar risers for a BMW motorbike & he reckons they're practically essential fitment on his particular model.
I've got my own CNC mill & could tackle the clamp quite easily if it weren't for the upright stem.
I'm not an engineer, I'm very much at the bottom of the learning curve & the more I try to think about how to machine them the harder it becomes.
Perhaps that's why they're horrendously expensive???