048v - - - - - 048v - - - - - Take one pound of antimony, half a pound of black soap, and half a pound of Montpellier tartar. Once it is all pulverized, you have to boil it in a varnished earthenware pot on a big fire as you stir it with a piece of wood or iron. The soap will burn off and be consumed by the fire and the rest will stay red. The quantity has to be reduced to a third. Then throw that on a tile and it will turn blackish. You will have to melt and pour that on a tile four or five times and then you will have regulin from antimony.
Others pulverise the antimony and mix it with equal quantities of saltpeter and powdered tartar and heat a pot or crucible until it is red hot, then add a little bit at a time, turning their back for fear of the smoke, and keep doing so until everything is added. They maintain the fire until everything is completely melted and melt that several times.
They become brittle having been put back to melt, often or for a long time, and they thicken and burn, in such a way that even when one melts a saulmon, the tin thickens at the bottom if, while casting, one does not stir it often. It is best for casting to melt a little lead & the or tin & remuer to renew at each melting. The antimony renders them breakable. The looking glass tin whitens them. One Pewterers put in on the fine tin one lb of looking glass tin per one quintal of fine tin & two lb & a half or three lb of red & soft copper of cauldrons, which is better than latten. There is fine & soft tin & brittle tin. The brittle one is cast in grille by the pewterers to sell it better. O They come out better & more neatly in stone moulds than in a copper mold, because copper is fat & sticks unless one heats the mold well or one casts large works. Three quarters of lead per one lb of soft tin, makes a very liquid line & proper for casting, which has a shine like a mirror. Tallow for glass lightens them. All things that lightens well metals & remove their thickness & dense nature & render them like liquid like water, render them proper for casting, for it is the thickness that prevents them from running. Soft tin is more even com than the brittle one, which is whiter and seems to be burnished like a mirror.
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To alloy well tin & lead, one needs to melt one by itself, and then mix in the other, small pieces at a time, and throw it often on the marble or the square tile. And when you will see it become well even like & shiny as if it were burnished, it is good. Because sometimes it becomes spotted due to too much lead & sometimes due to too much tin. There is some tin that has more lead than others. Common tin is the one that is mixed with lead.