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Gum Ammoniac Liquid Information & Instructions


Liquid Gesso

Gum Ammoniac Liquid is a unique specialty size for flat gilding that is used for illuminating manuscripts. This material is ready to be used when opened. It is best suited for small or fine work. You may need two applications if the paper is extremely absorbent.


It can be used with gold, silver, copper, imitation and variegated leaf.


Usage Overview


Base Material:brownish color
For calligraphy a 100% Rag Paper ensures that the size does not run. For icons, artwork and other small projects, the surface should be clean and free of dust and oil.


Application of Gum Ammoniac

Gum Ammoniac can be applied with a brush, dip pen or a ruling pen. Gold leaf can be applied after about 10 minutes with an open time of about 24 hours depending on paper used, temperature, humidity and the thickness of the application.

The unique property of this size is that you can reactivate the size by blowing on it with warm breath. Using a breathing tube or straw allows you to activate the size in specific areas before immediately applying the gold leaf.


The color is a brownish color, but by adding a water base paint or ink, you can change the color slightly to change the tone of the gold.


Transfer Leaf
Transfer gold is preferred as it is much easier to handle than loose leaf. After the size has set, place the gold leaf on the area where the size has been applied. Using your thumb, apply a small amount of pressure to the transfer paper backing and the gold leaf will adhere to the size. Then peel off the transfer paper off and clean up if needed.


Loose Leaf
If you do not have transfer leaf, use a Gilders Tip to pick up the loose gold leaf carefully lay it on the item being gilded. From the gold leaf books, remove a sheet of the tissue paper that separates the leaves. Place the tissue paper on the back of the gold leaf, and use your thumb to gently apply pressure on the tissue paper, rubbing and pushing the gold leaf down into the size.


Miscellaneous Information
Made in the USA


Ingredient Composition
Gum Ammoniac


Clean up brushes and tools with warm soap and water. Keep in mind that Gum Ammoniac sets hard quickly. It is best to clean your brushes and tools immediately with hot water.


Gum Ammoniac Liquid has an unlimited shelf life, but should be refrigerated when not in use. Keep the containers tightly closed and avoid frost and heat.





Gum Ammoniac is not toxic, but it should not be ingested. Wear eye protection.


The conditions, methods of handling and use of this product are beyond our control and may be beyond our knowledge.  For this reason, we do not assume responsibility and expressly disclaim liability for loss, damage or expenses arising out of or in any way connected to the handling, storage, use or disposal of this product.