Originally Posted by
Bill Kapaun
IF the nipples are "frozen", take a vise grip pliers (sharp teeth help much) and you can clamp it on the right amount and simply "peel off" the old nipple.
I had to deconstruct a 20" wheel with a worn-out rim. I wanted to re-use the spokes. The nipples were so tight from corrosion that I rounded off a few even after using penetrating oil. I used a "mini" slip-joint pliers to unscrew all the nipples. Luckily there were only 20 spokes!
These were handy to grab the rounded-off spoke nipples.