Powdered Hide glue

Traditional animal hide glue.

Glue is composed of 84-90% protein, 8-12% water and 2-4% mineral salts. It contains no fat, carbohydrates, purine, cholesterol or preservatives.

We asked an experienced violin maker about his method for mixing hide glue with water, this is his approach -
"I don’t get too scientific about it, and generally mix it half and half. For instance, pour in one inch of glue granules, and then fill the water to the 2 inch mark. In doing this, the water seeps into the glue –so technically the mix is probably about 60/40 or 70/30. There are MANY videos on youtube on the topic, I would suggest finding one that isn’t overly annoying and go with it. Different gram strengths have different mixing requirements, which is important to remember (444 ends up thicker than 250 for example )"

Once mixed, the powder/water paste is then heated in a jar sat in hot water (60-65 degrees celsius) for 2-4 hours until liquid.

The parts being glued should be pre-warmed for optimal results while gluing and maximum working time.

Unused glue can be stored in the refrigerator for around 1 week. Use a microwave to reheat to liquid form.