I wouldn't say I was obsessed, more concerned. As a former cat owner myself I know the love you feel towards it and can imagine the pain of seeing it suffer.
If 3D printing is out of the question then maybe cut off one of your own legs so that it doesn't feel like such a freak.
This is the stupidest thing I have ever heard!
Do you really think I want to be jumping sideways every time the Rear Admiral sneaks up on me?
How about an arm then? I am not sure cats can distinguish between limbs so maybe you'd get away with that.
I don't know you very well but have a feeling your left arm is not doing much most of the time anyway.