Looking at the pic that Patrick put up of Vicente Boffo making a trailed knop chalice its has become obvious to me that the description in the Mdina book of how these were made must be wrong.
The book states that the chalice was made in 5 sections, I quote “The craggy knop was built up by trailing coloured glass onto the lower part of the stem once it had been added to the foot but before the upper part of the stem and bowl were attached”. I’m no glass blower but even to me this seems a difficult way to make it. This states that he has made the foot and knop first and then applied a top stem then attached the bowl. Clearly from the picture of Vicente you can see him casting on the foot after the rest of the stem and knop have already been attached to the bowl.
I think that these were made in 4 pieces not 5. The bowl was blown, the stem applied, then coloured glass was trailed over the stem to produce a craggy knop and then the foot was formed on the end of the stem as in the picture of Boffo. I would like to follow this up by saying that I can clearly see the stem running through the middle of the knop on chalice I own. Also the centre part of the knop has a much thinner colour than the sides due to the clear stem running through it.
I would also like to make another bold suggestion that IMHO the description of the image of Ettore doing punty work on p26 is not right. There is far too much glass being applied to the base and looking at the size of the blown piece he could well be casting a stem on to a chalice (the bowl is properly formed later after applying the punty to the foot).
It is interesting to note the 2 pictures of Vicente and Ettore look very similar in the manner of their work.
Anyway some food for thought
