Neither in children's creativity, nor in construction not to manage without binding, and glue usually plays their role, but it is not suitable for all actions. For example, for pasting a room with wallpaper or working with papier-mâché it is much more sensible to use a paste. At home, he prepares in a few minutes, even a child will master the technology, and it does not matter which of the recipes to study.
How to cook flour paste? Recipe and recommendations
The easiest recipe for paste - from flour. He is taught to cook kids in labor education lessons, and it is he who is considered to be a safe and easy-to-use means for fastening light materials: for paper, for leaves, for seeds - the paste of flour suits absolutely everything. It is used not only when creating any crafts, but also when sealing gaps in old wooden windows.
To cook a flour paste at home, you need only enough water and the flour itself. In most cases, wheat is used as the most affordable and available in every home, but professionals advise taking coarse ground rye to enhance the binding effect. True, the на rye flour-based paste will have a dark shade and may be noticeable when working with light materials.
For boiling paste you need an enamel bowl, pan or even a bucket (depending on the volume you need). Cold water is poured into the container, and as soon as it boils, flour is introduced into it in a thin stream. As soon as the grains of flour touched the water, it is necessary to start stirring the liquid, otherwise the flour will simply accumulate on the surface, and after that it will settle in a dense lump. Despite the fact that the paste is a "fighter of the invisible front", and its appearance does not catch the eye, the consistency should be made as homogeneous as possible. Therefore, flour is poured very carefully, and the mass is stirred continuously.
The amount of flour is rarely calculated in advance: it is added to the eye, until the mass begins to resemble a batter. When it cools, it will thicken, so it’s better not to add flour than to overdo it: then you have to heat the paste again, add warm (!) Water, and again boil it slightly. The approximate ratio of flour and water for paste is 1: 3 or 1: 4. It also varies depending on the orientation of the product: if you want to process wallpaper with paste to fit them on the wall, perhaps the ratio is 1: 2.5 (for vinyl wallpaper), and 1: 3 (for thin ones).
It is worth noting that if you are preparing a paste for paper wallpaper, it is recommended to introduce a little ordinary wood glue (for dark wallpaper) or PVA glue (for light) before starting to cool it into the ready-mixed mass. The very same cooking after boiling the paste is desirable to carry out in a water bath to reduce the likelihood of bubbles on the surface of the composition.
Papier mache crater: composition features
By and large, papier-mâché uses a universal version of flour paste, but it is made thinner (flour to water is 1: 5 or more), and ingredients such as PVA glue and glycerin are often added. However, even the cooking technology may differ from the above.
Pour the sifted flour into an enamel bowl and pour it with cold water in the same volume: i.e. 1 part flour and water. Whisk components must be whipped to get a thick mass without lumps. After that, the remaining parts of water are poured in (2 or 3, because for papier-mâché the paste is brewed very liquid), the container is placed on the stove, the liquid is brought to a boil. At the same time, the mass still needs to continue stirring and slightly beating. When the flour completely disperses in water, 5-10 ml of glycerin is added there, the container is removed from the burner, the resulting liquid is decanted through gauze. Used paste only in chilled (to room temperature) form.-
Starch paste at home
Kleister, boiled not on flour, but on starch, has both undeniable advantages and some shortcomings. The latter consist in an unpleasant smell from the finished product, which appears after 5-6 hours, so the paste from starch is boiled in a very small portion and for immediate use. But its advantages depend on the selected starch: the corn is recognized as the best, since the mass is the most pleasant in consistency, the paste quickly impregnates the material, dries no less quickly, and perfectly fixes it. Rice and potato starch showed a little worse. And any starch allows you to make the fact of using the paste unnoticed, because the liquid will not stain.
PVA glue is sometimes added to starch paste, all with the same goal of strengthening the fixation of parts, as well as changing the shade of the finished product - the paste will become almost completely transparent. It happens as follows:
- 1 part of flour is poured into a small container, after which 1 part of hot water (boiling water) is gently poured into it. Mass immediately need to start whipping, while you pour in water.
- At the same time, water in the amount of 3 parts is brought to the boil on the stove. As soon as the water boils, and in a small bowl, all the starch lumps disperse, the contents of the latter pour into boiling water, and the mixture is gently whipped with a whisk.
- Immediately after this, the container is removed from the plate, the paste continues to be mixed, giving it uniformity. As soon as it cools to room temperature, PVA glue is introduced into it. The amount of glue per 1 liter of paste is about 100 ml.
In some cases, the starch prior to its boiling is ignited on the baking sheet in the oven, so that its lumps darken to brown. It is then ground and passed through a sieve, and after that it is mixed with water. Occasionally 1-2 st.l are added to starch. sugars to enhance adhesiveness.
Professionals are advised to boil the paste in a small volume, since it hardly stays in the refrigerator for more than a day. Only glass containers or plastic containers that have a lid are suitable for storage. And the greatest efficiency from the use of paste can be obtained if you use it when the mass has a temperature of 40 degrees.