Nibbling Glass

Cutting glass in a straight line is a snap, but curved cuts are a different story — I’ve tried and failed spectacularly. But maybe if I’d had a pair of these glass-nibbling pincers I would’ve done a better job.
Knipex designed these oil-hardened, tempered steel pliers for breaking off narrow strips of glass to a scored line or profile. They make one version with a 9.5mm jaw and another with a narrower 4mm jaw and spring-loaded handles. Both pliers measure 6-1/4″ long with plastic-coated handles.
The wider pincers sell for $21 and the narrower for $28.
Glass-Nibbling Pincers [Knipex]
Glass-Nibbling Pincers [Chad’s Toolbox]
These grozing pliers were probably a staple for old time stained glass workers. Now glass cutting ring saws – like those made by Gemini make curve cutting much easier.
yeah traditionally glass was cut in curves by scoring say an octagon instead of a circle and then filing it down to size, its a lot of work.