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CRAFTS COVERED. Theophilus’s work covers the enormous range of craftsmanship of his time, ranging from the making of paints, glues, oils, varnishes, and metal work, often citing several methods. Glasswork required building four types of kiln and making numerous colored glasses and glass paints, as well as lead window assembling. The metal work includes building the workshop, making the kiln, all the tools, a church organ, methods of refining and plating metals, and church bells. And more. https://lnkd.in/d7yzXt5 View in LinkedIn

THE FIRST ROSE COLOR. “Mix with the plain flesh colour a little vermillion and a little red lead.” https://lnkd.in/d7yzXt5 View in LinkedIn

ON THE MIXING OF FLESH COLORS. “Take flake-white -- which is white made from lead -- and, without grinding it, out it just as it is, dry, into a copper or iron pot, place it over a fire and heat it until it has changed to a yellow colour. Then grind it and mix it with some ordinary flake-white and vermillion until it becomes the colour of flesh.” https://lnkd.in/d7yzXt5 View in LinkedIn

VERMILLION. “Take some sulphur of which there are three kinds -- white, black, and yellow. Break it up on a dry stone, and add to it two parts of quicksilver, weighing them on the scales...put them in a glass jar, stop up the mouth so that no vapour can escape, and put it on a fire to dry. Then place it on a burning fire, and, when it begins to get hot, you will hear a crackling noise inside caused by the quicksilver combining with the burning sulphur. When the noise has stopped, remove the jar at once, open it and take the colour.” (ie: S + Hg --> HgS, a toxic process to say the least.) https://lnkd.in/d7yzXt5 View in LinkedIn

THE MEDIEVAL ARTIST. “His skill, he sees, above all else, as a gift from God...which can still be used to reflect something of the essential purpose of Man -- the praise of God. The art itself, for him, a work of beauty, but it is far more, for it is an act of worship and praise.” https://lnkd.in/d7yzXt5 View in LinkedIn

FOUR GLASS KILNS NEEDED BUILDING. “Again, before making stained glass, one must know how to make the kilns, the vessels to contain the ingredients and also the glass itself.” Not to mention the exacting and complex recipes for making the glass paints, and colored glass. https://lnkd.in/d7yzXt5 View in LinkedIn

MAKING EVERYTHING YOURSELF. It was not sufficient for a metalworker to know metal. “Before embarking on metalwork one must learn what kind of workshop to build, how to make the work-furnace, the bellows, the anvils, hammers, pincers, files, chisels, rasps, chasing tools, crucibles and so on, and also have some knowledge of how the relevant metal is itself produced.” https://lnkd.in/d7yzXt5 View in LinkedIn

Light can completely change a familiar image into something different. View in LinkedIn

BIG OOPS AS A LEGACY. “I think there is a world market for maybe five computers.” (Thomas Watson, chairman of IBM, 1943). https://lnkd.in/dif7Y_D View in LinkedIn