Main Title, Index and Introduction

Links

§ VII.  For Painting on Glass

LIX.  How to draw on glass.
    Grind lamp-black with gum-water and some common salt.  With a pen or hair pencil, draw your design on the glass, and afterwards shade and paint it with any of the following compositions.

LX.  A colour for grounds on glass.
    1.  Take iron filings and Dutch yellow beads, equal parts.-- If you want to have a little red cast, add a little copper filings.  With a steel mullar grind all these together on a thick and strong copper plate, or on porphyry.  Then add a little gum-arabic, borax, common salt and clear water.  Mix these a little fluid, and put the composition in a phial for use.
    2.  When you come to make use of it, you have nothing to do but with a hair pencil lay it quite flat on the design had drawn the day before; and having left this to dry also for another day, with the quill of a turkey, the nib of which shall not be split, you heighten the lights in the same manner as you do with crayons on blue paper.  Whenever you put more coats of the above composition one upon another, the shade, you must be sensible, will naturally be stronger.  And when this is finished, you lay your colors for garments and complexions as follows.

LXI.  Preparation of lake, for glass.
    Grind the lake with a water impregnated with gum and salt, and then make use of it with the brush.  The shading is operated by laying a double, treble, or more coats of the color, where you want it darker.  And so it is of all the following compositions of colors.

LXII.  Preparation of the blue purple for glass.
    Make a compound of lake and indigo, grinded together with gum and salt water; and use it as directed in the preceding article.

LXIII.  Preparation of the green for glass.
    Indigo mixed with a proportional quantity of gamboge, and grinded together as above, will answer the intended purpose.

LXIV.  Preparation of the yellow for the same.
    Gamboge grinded with salt water only.

LXV.  Preparation of the white.
    You have only to heighten much the white parts with a pen.

LXVI.  The proper varnish to be laid on glass after painting.
    Boil oil of nuts, some litharge, lead filings, and white copperas calcined.  When done and cold, lay it all over the colors which you put on the glass.

LXVII.  How to paint on glass without fire.
    Take gum arabic and dissolve it in water with common salt, bottle and keep it.  With this liquor, if you grind the colors you intend to paint with, they will fix and eat in the glass.  Should you only find they do not enough, increase only the dose of salt.