throttle linkage cable Q

I can think of several ways to skin this cat but honestly, unless there was some compelling reason not to do so, I'd just pony up a few bucks for a new complete cable. I've had broken throttle cables to deal with before and it was inconvenient at the least to semi-dangerous at the worst. Making your own inner cable raises the possibility of it coming loose when you least expect it.

I got my last cables from Rock Auto and they were about $20 or so. If you are determined to make your own I can offer some ideas on how to do that.