putty or grout knife?

No, but you are VERY close!

Used to cut lead for stain glass windows

QUOTE: "No, but you are VERY close!"
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That's the same answer I got from the wife.

Windshield replacement knife

Yup, a came knife, came being the H in cross section, 6' long strips of lead, the knives with lead at the butt end doubling as a hammer to drive flat sided horseshoe nails into the board on which the window is being assembled, to hold the came against the glass pieces as the window is assembled piece by piece across the board, removing and re-driving the nails for each piece of glass.

I researched and began working with stained glass several years before the craft was "discovered" by hobbyists and became a nationwide fad. Soon thereafter, "better" designed knives were marketed that cost more - but they weren't as good IMO, and I stuck with mine.

Mine hasn't been sold as a came knife for many years now, but you can still buy the beef skinner knife that Vash mentioned, which is the same knife, for twelve bucks.

I learned stained glass in high school back in the late 70's and made several windows in the years afterwards. I usually stick with foil instead of lead, but have experience with both.

So, what do I win? A sack of cricket crap?

Yup! In as big a sack as you can provide and the prized privilege of being allowed to collect it yourself! :D

Cool! My dentist makes stained glass items and he's very good! I've always admired the talent and skill it takes to make items of beauty.

Interesting...thanks

Dexter Russell is 5min from my house, bet that knife can be had in their seconds shop for even less than $12. All kinds of cleavers, knives and assorted goodness there.