pinch trimming

pinch trimming

[′pinch ‚trim·iŋ]
(metallurgy)
Trimming a tubular or hollow part by pinching the flange or lip over the cutting edge of a punch.
References in periodicals archive ?
for heading of case, pinch trimming die afk/ct/1872, top die ii - draw afk/ct/1869, top die iii - draw afk/ct/1870 etc.