To Gild Tin Glass or Leather (Spell)

From Egyptian Secrets of Albertus Magnus, Joseph H. Peterson edition:

To Gild Tin, Glass or Leather.

Take four pounds of linseed oil, boil it in a glazed earthen pot, so long till a feather dipped therein burns up; then mix sixteen ounces of varnish and eight ounces of aloes therewith. Stir all well together and boil till it obtains the thickness of a syrup. Should the color be too light, mix from three to four ounces aloes thereto, and less varnish, and the color will be a shade darker and nearer the gold color. After this color has boiled sufficiently long, take it off the fire so that the flame may not touch it, otherwise it will all burn up. Save it, the older it is, the better it will be. If you desire now to gild tin or glass, paint with a paint brush and it will resemble the color of gold.

The grimoire Egyptian Secrets of Albertus Magnus lists this spell.

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