I'm using STAINED GLASS WORK, A TEXT-BOOK FOR STUDENTS AND WORKERS IN GLASS. BY C. W. WHALL, 1914 as a textbook in my Stained Glass classes at Bryn Athyn College. In the glossary on page 371 I came across the following entry:
"Groseing, the biting away the edge of the glass with pliers to make it fit. With regard to this word and to the term "calm," I have never found any one who could give a reason for the name or an authority as to its spelling, the various spellings [Pg 371]suggested for the latter word including Karm, Calm, Carm, Kaim, and even Qualm! But while writing this book I in lucky hour consulted the treatise of Theophilus, and was delighted to find both words. The term he applies to the leads is "Calamus" (a reed), while his term for what we should call pliers is "Grosarium ferrum" (groseing iron). So that this question is set at rest for ever. Glaziers must henceforth accept the classic spellings "Calm" and "Groseing," and one may suppose they will be proud to learn that these everyday terms of their craft have been in use for 900 years, and are older than Westminster Abbey."
I confess I didn't know this and as awkward as it sounds I will try to start using lead calms rather than lead cames!
Ken, I'd say you were not wrong, but that the spelling has evolved and, today, came is what we call it, not calm. But when we see that in old texts, we know what they're talking about. And Whall's book is fantastic. Best, Mary