What is casein glue and do -it -yourself manufacturing methods

Casein glue is a multipurpose, environmentally friendly glue derived from milk protein that is frequently used in crafts, bookbinding, and woodworking. For those looking for an alternative to synthetic glues, its natural origins and strong bonding properties make it a desirable option. Casein glue has a long history of use, dating back to ancient times when it was preferred for its ease of use and durability, in contrast to many modern adhesives.

The ease of preparation and application of casein glue is one of its main benefits. It is easy to make at home with everyday household ingredients. In addition to saving money, doing it yourself guarantees that the glue is free of dangerous chemicals, protecting both users and the environment.

The basic procedure for manufacturing casein glue is to separate the casein from the milk and combine it with a mild alkali, like lime or baking soda. This mixture produces a powerful adhesive that works well for a variety of tasks. You can make a dependable glue that works well for both small repairs and larger creative projects in a few simple steps.

We’ll walk you through the easy process of making casein glue at home in this article. Making casein glue is easy and satisfying, regardless of your level of experience with do-it-yourself projects or your desire to learn new crafts. Let’s get started and learn more about the advantages of this tried-and-true adhesive.

What is Casein Glue DIY Manufacturing Methods
Casein glue is a natural adhesive made from milk protein called casein. It"s eco-friendly and has been used for centuries in woodworking, bookbinding, and other crafts. 1. Mix 2 cups of skim milk with 2 tablespoons of vinegar. 2. Heat gently until curds form. 3. Strain the curds and rinse with water. 4. Dissolve 1 tablespoon of baking soda in water and mix with the curds until smooth.

General information about casein

Casein is a naturally occurring substance derived from milk protein and is the primary ingredient in casein glue. Even in ancient Egypt, the composition was understood, but it wasn’t until the 19th century that the recipe was refined and the glue gained resistance to the long-term effects of moisture. The mixture only recently began to be produced in large quantities, despite having many benefits.

Casein powder is used to make glue; it looks like gray granules. They obtain the CLUSTER type after adding fluid. Granules can vary in size, color, and intersection pattern.

These characteristics allow granules to be categorized into four types:

  • Higher. Homogeneous powder without impurities. Particle size up to 5 mm. The color is white or with a cream tint, without intersperse.
  • First. Particles can stick together, but well separated by hand. They have a light yellow color.
  • Second. Yellow particles with a diameter up to 10 mm. There are small lumps in the mixture. A small percentage of mechanical impurities is allowed.
  • Third.Different sizes of dark yellow granules with brownish interspersed. May contain mechanical additives.


A variety of materials, including cardboard, plywood, wood, foam, earthenware, and polystyrene foam, can be used to secure casein composition. Several industries actively use the mixture’s capacity to blend various materials:

  1. Furniture manufacture. Glue is used for the manufacture of environmentally friendly interior items. The composition improves the structure of the tree, safe, resistant to high temperature and moisture.
  2. Making building mixtures. Finish concrete, brick and plastered facades. Make a detergent decoration for the use of indoors.
  3. Painting, printing house. Decorative painting of cardboard, stone, canvas, concrete and wooden base make casein-oil dyes, which are applied on the ground-covered basis.
  4. Chemical production. Acid Casein is one of the components for paper production. It is mixed in varnishes, paints, used in the production of cosmetics, different pigments.
  5. Food industry. Casein nutrient protein supplement is part of children"s and sports nutrition.
  6. Label production. Casein glue is needed to glue labels on glass containers. Modified starch is usually added to such mixtures.

A mixture is used to whiten the trees in order to protect them from pests and atmospheric phenomena.

Casein in icon painting

Owing to its sulfur and nitrogen content, the mixture is frequently used in iconography and painting. The components on the list cease to rot. In order to acquire the attributes that are added as glue:

  • ammonia;
  • borax;
  • ammonium carbonate;
  • calcium hydroxide;
  • soda, caustic potassium.

The elements on the list enhance adhesive qualities. A mixture of vinegar or formalin is used to strengthen the seam.

Composition and properties of glue

Granular powder is the form of the adhesive composition, and it needs to be diluted with water to become homogenous. Manufacturers supplement the mixture with additional ingredients that enhance the quality of glue, in addition to milk protein:

  1. Caniphol (extends the shelf life).
  2. Water. It needs to dilute dry powder to get an adhesive mixture. Standard ratio 1: 1.
  3. Nitrates, phosphates (salts and nitric and phosphatic acids).
  4. Amino acids. Organic acids, which are more than 400 species.
  5. Calcium casein. Component slowing protein splitting.
  6. Sodium bicarbonate (ordinary baking soda).
  7. Lime. For glue, a fur is used, which in the open air retains its qualities.
  8. Kerosene. Helps the powder composition not spray and not to be divided into separate particles during transportation.

There is always an eco marking on the package because all of the glue’s ingredients are safe for the environment.

The primary ingredient is casein, which is derived from cow’s milk and contains 3.15 percent protein for industrial use. Goat milk has a higher protein content than 4.6%.

  • Slurns well in water, without forming lumps. There may be a minimum precipitate;
  • The strength of fastening wooden bases: the composition "Extra" – up to 105 kgf/sq.cm, "ordinary" – 75 kgf/sq. cm;
  • dynamic viscosity-10.8-27 p;
  • solidification period – up to 5 hours.;
  • a specific smell that is quickly weathering;
  • After hardening, it is poorly washed off with water;
  • when temperature drops can crack.

Advantages and disadvantages

  • perfect glue for wood;
  • environmentally friendly mixture, you can work without protective equipment;
  • It is stored for a long time in the powder state subject to storage rules;
  • The seam formed by glue shows resistance to dampness and temperature extremes.
  • The finished diluted composition is not more than 5 hours. In order not to look for ways to utilize hardened residues, you need to accurately calculate the required amount of solution before cooking;
  • The natural components of the mixture are a good environment for the propagation of microorganisms and the development of mold;
  • Over time, the glue seam darkens, which worsens the type of glued part/subject.

When cooking, a small amount of ammonia is added to prevent the growth of mold in the gap.

Natural casein glue is made from milk protein and is highly valued for its long-lasting, robust bonds as well as its environmentally beneficial qualities. Baking soda, vinegar, and skim milk are the only common ingredients needed to make casein glue at home. It’s very easy to make. Through the process of curdling milk with vinegar, separating the curds, and combining them with baking soda, an adaptable glue ideal for bookbinding, woodworking, and other crafts can be made. This tutorial will show you how to make your own casein glue, which is an efficient and environmentally friendly substitute for store-bought adhesives.

Industrial production

Large businesses produce glue in compliance with GOST guidelines for adhesive production. Amino acids or alphabet enzymes are added to the waste from redesigned milk to create the raw materials. Lactic acid is most frequently used; it is added to skim milk and causes the casein grains to precipitate out. Grain compacting is achieved by repeatedly washing with acid; surplus fluid is eliminated by centrifugation or pressing. After completion, the casein is crushed, dried, and enhanced with additives.

Fierce lime, sodium fluoride, copper sulfate, kerosene, caustic, and calcified soda are additional ingredients. Users can add liquid glass, Portland cement, chalk, and bone flour to the composition, depending on the requirements given to the glue.

Glue varieties

  1. Extra. Has improved technical characteristics. Repair items from any wood, connect different materials. It differs in a high price. Creates a high -strength connection, withstanding environmental influence and physical activity.
  2. Ordinary.Used at wood -owned enterprises.


A casein is involved in the process. Dairy plants provide the casein raw materials needed by the pharmaceutical, woodworking, and perfume industries as well as businesses that make paint, adhesive, and textile products. European factories produce casein that is of higher quality because they use new equipment and modern technologies to produce it. Using a membrane technique, one can obtain casein from micellar milk while retaining all of its beneficial properties. It is obtained in France without the use of microorganisms or enzymes through the coagulation of casein complexes. Protein is supplied to American manufacturers via the ejector method.

Buildmarkets offers pre-made carpentry compounds of various brands as well as a glue preparation powder.

  1. Anles "12 stools". Mixture powder. The solution made is visible, homogeneous, forms an elastic, waterproof seam. Ripens-1-2 hours. Price – 142 r. For 50 g.
  2. Titebond Original. Carpentry glue produced in packages of 20 kg. Quickly grips, forms a film of light brown color, which after hardening can be painted and grinded. Price – 6500 r.
  3. Titebond Premium (moisture -resistant). One -component composition, the use of which is possible both indoors and outside. Safe tool that can be glued with objects in contact with food. Clutch time – 10 min. Price – 1900 r. per 3.5 l.

One adhesive that stands out for its natural origins and powerful bonding abilities is casein glue, which is made from milk proteins. It has been a dependable substitute for contemporary synthetic adhesives for centuries. Due to its non-toxic nature and durability, this glue is particularly valued in woodworking, bookbinding, and some artistic applications.

Making casein glue at home is easy and only needs a few basic ingredients. Casein-rich milk can be combined with a few everyday items, such as vinegar and baking soda, to create a flexible and powerful adhesive. Using a do-it-yourself approach guarantees that the product you produce is natural and eco-friendly while also saving money.

Producing homemade casein glue can be a useful and fulfilling project for anyone with an interest in sustainable living, be it an artist, craftsman, or simply someone who enjoys sustainable living. It lessens your dependency on manufactured goods while enabling you to continue with customary practices. You can use the power of this tried-and-true adhesive for your projects with a little time and effort.

Video on the topic

Polymer from casein

🔥 DIY Superciper from milk

From cottage cheese § super glue ?

What color, in your opinion, is able to make a person happier?
Share to friends
Daria Yakovlev

Interior designer, author of online color design courses. I will help you create a harmonious interior using color.

Rate author
Add a comment