Smith, G. / The laboratory; or, School of arts: containing a large collection of valuable secrets, experiments, and manual operations in arts and manufactures, highly useful to gilders, jewellers, enamellers, goldsmiths, dyers, cutlers, pewterers, joiners, japanners, book-binders, plasterers, artists, and to the workers in metals in general; and in plaster of paris, wood, ivory, bone, horn, and other materials
[Part VI.] Of lead and pewter, pp. 233-242
LEAD AND PEWTER. 233 bear it in your hand; then take your ground, and dipping some cotton into it, wipe the steel with it; take afterwards quicksilver, and wipe your ground over; then take the prepared gold, and lay it on such places as you would have gilded; after you have done this, lay it on a charcoal fire until it turns yellow; then wipe it over with tallow; and take cotton to wipe your blade, holding it all the while over the fire until it inclines to a black; rub it with a woollen cloth, until that colour vanishes ; and rub it again. with chalk, until you bring it to a fine gloss. If you would have the ground brown or blue, hold it over the fire until it turns either to the one or the other colour; then wipe it over with wax, and polish it with chalk. OF LEAD AND PEWTER. To make Pewter hard. TAK E one pound of common pewter, and let it melt in an iron pan; add to it some salad oil, let it evaporate well, and stir it continually, keeping the flame from it; add some fine wheat flour, and stir it well about; then take all the burnt matter off the top, and to each pound add three or four ounces of plate brass, filed small, and mixed with oil, and a few ounces of pulverized bismuth, or regulus of antimony; stir it all the while, and when all is melted and incorporated, you will not only have a pew- ter that is harder and whiter, but also different in its sound from common pewter. Or, Melt tin in an iron pan, strew colophony, or common resin, with fine wheat flour mixed together, into it; and stir it gently about; this takes off the blackness, and makes it of a fine white colour.
Based on the date of publication, this material is presumed to be in the public domain.| For information on re-use see: http://digital.library.wisc.edu/1711.dl/Copyright