Topic: Thomas Webb wheel engraved glass for show.

[Paul S.]

very interesting and thanks for posting.         All cutting is intaglio in the sense that the pattern/design is cut into the glass and lies below the surface, and agree would have been useful if they'd come up with something at least original, but suppose I can see their reasoning in a sense.
But hats off to those guys, especially in the day of the manual treadle - they turned out some stunning work.

Wilkinson devotes a page and a half discussing copper wheel engraving - plus a good picture - and he says that these treadle lathes were manual until 1920s.          He then provides seven lines only to the intaglio process, unfortunately. 

[Ekimp]

That’s interesting to know how long the treadle lathes lasted, I was wondering about that, I’ve not got Wilkinson. I suppose the 1920s was when electric motors became available.

Northwood II devotes 14 pages to Intaglio including 8 pages of photographs. I have found it to be an interesting book