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Nov. 19, 2013 | Posted in Reports, Painting and Drawing, Restoration of Paintings | Tags:
Staff Blog≫ Painting Restoration Course: Gilding Nov.14, 2013

Today’s lesson is about gilding technique. One student is taking yearlong course, so she is doing detailed work on the preparation of the second layer. The other student is taking a 2-month course, so she had completed the preparation of the base.

First, apply a base to the frame to be restored (frame for practice). The first layer of the base is prepared with glue (colla di coniglio) mixed with hydroxide calcium. The second layer is prepared with glue (colla di coniglio) mixed with bolus (usually yellow or red). Yellow bolus gives a natural touch to the restoration even when the gilding falls off, or intentionally gives

Painting Restoration Course

Frame for practice with the first layer of the base.

Painting Restoration Course

Second layer above the first.

Whether or not this second layer is applied good will affect the next process of polishing.

When the second layer is dry, apply the gold foil and polish using agate stone (Pietra d’agata). The teacher advices students to beware that there are cheap fake polishers, as agate stone is usually costly.

The technique is the same for silver or other foils.

Painting Restoration Course

When you cut the gold foil, you need to use a special knife for gold foil, and cut it on a special cushion for guilding (cuscino per doratura).

Painting Restoration Course

Apply water glue (colle acqua) with a blush, and place carefully the gold foils cut in square pieces. For practice, we used foil very similar to gold.

Painting Restoration Course

Polishing with agate stone.

Painting Restoration Course

One student already proceeds to practice applying actual gold foil. The instructor explains about the polishing process.

Painting Restoration Course

Put the gold foil and press it with cotton.

Painting Restoration Course

Student taking notes of the instructor’s explanation.

Painting Restoration Course

The object looking like a pen with black handle is the polisher.

There is also a method to polish the base first and then pu gold foil.

Painting Restoration Course

Painting Restoration Course

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