Lay the drag, that is the lower half of the flask, on a board or a table; mix dental plaster of Paris with water until it is about as thick as batter and fill the drag with it.
Just before the plaster begins to set, that is, harden, take your pattern, whether it is one you have made or a china dish, oil it and press it down into the plaster until it is nearly even with the top edge of the pattern and let it stay there until the plaster is hard, that is, over night.
Then brush sweet oil over the top of both the pattern and the hard plaster which must come about flush, that is even, with the top of the drag. Now put on the cope and fill it with plaster, smooth it off even with the top edge and let the plaster get hard.
Your next move is to lift the cope from the drag which you can do without trouble and then lift the pattern from the drag, using the point of a knife if it seems inclined to stick.
Drill a 1/4 inch hole through the plaster in the cope, fit the cope to the drag again and then pour in the pewter. When it is cold take the flask apart, take the casting out gently and don't spoil it even if you have to break the mold.
Where cups, tankards or other hollow vessels are to be cast make a mold for it just as though it was a solid piece; now pour in the melted pewter and when it has cooled enough to form a solid layer turn the mold upside down and let the melted metal run out which will leave it hollow. If handles are needed cast them separately and solder them on to the body of the vessel. Some finished pewter ware is shown at C.
Fig. 40C. Home Made Pewter Ware
Plates and the like can be scraped with a steel scraper and when they are nice and smooth rub them with a rag dipped in oil and whiting, but do not polish them.
If you have a turning lathe of any kind you can put your cups and other round objects in it and turn it up with a bent inside turning tool, a flat tool and a round point tool such as is used for turning brass, ivory, etc., and which you can buy for a quarter apiece,33 and this will leave the pewter bright and beautiful.
33 These tools can be bought of Luther M. Wightman, Milk Street, Boston, Mass.