Vegetable starch and water have been mixed for centuries to make glue. Street performers and show promoters stick their posters using a similar flour-based glue. In manual activities, it is used to make papier mache or glue cutouts. Finally, professional bookbinders repair the most valuable archives in this way. How about making your own glue?
- 3 tablespoons of flour or wheat starch
- A small amount of cold water
- 200 ml of water (which will be boiled)
- 500 ml of water, if you prefer the double boiler method
- Sugar or white glue (to thicken a preparation that is too liquid)
- Copper sulfate (a preservative and insect repellent)
Method 1 of 3: Make the preparations
Step 1. Boil some water
Pour 200 ml of water into a saucepan and bring it to a boil.
Step 2. Mix the flour and water
Mix 3 tablespoons of flour or wheat starch with a little water at room temperature. Add enough water to make a liquid mixture, which you can pour.
Step 3. Pour the mixture into the boiling water
When the water has reached the boiling point, add the flour mixture, while stirring with a spoon.
- The mixture will foam throughout the boil. Mix to prevent it from too much foam, burning or forming lumps.
- To obtain the desired consistency more easily, carry out the operation in a water bath. To do this, place a saucepan containing the flour / starch and water mixture in another saucepan, larger and filled with water (500 ml) to boil.
- If the mixture becomes too thick, add a little water.
Step 4. When the mixture thickens and becomes homogeneous, remove from the heat
The operation can take between 2 to 10 minutes.
If you opted for starch, the mixture will turn transparent once it's ready
Step 5. Adjust the mixture
Ideally, the preparation will be ready to use once it has cooled. If, however, you have any adjustments to make, take advantage of them while it is still hot.
- If the mixture is not sticky enough, add a little sugar or liquid white glue. Start by adding 3 tablespoons of sugar or glue, then adjust if necessary.
- To preserve the mixture and prevent it from being invaded by hungry little animals, add a very small amount of copper sulfate.
Step 6. Let the mixture cool
Once it has reached room temperature, it should have the consistency of a gooey jelly.
- Flour and starch vary slightly between brands, so the consistency of the glue will also be slightly different. The main thing is that the basic product does not lump.
- If you have lumps, remove them by passing the resulting paste through a fine sieve or old sticky.
Step 7. Store the glue, sealed in a box, in the refrigerator
If you leave it at room temperature, it will start to smell after two days and go moldy after a week. Adding the copper sulfate is optional, since you can retain the glue otherwise.
- If you are using the glue, transfer what is left to a container, cover and reheat it to sterilize it.
- Pour a little water on the surface of the glue before storing it. The water will serve as a protective cover on top of the glue, which will not mold during storage. Discard this water before using the glue again.
Method 2 of 3: Paste posters
Step 1. Apply a small amount of glue
With a brush or with your bare hand - gloved - apply a little glue to the wall. This glue is particularly adherent on wood, stone, but also on other surfaces.
- Remove any small lumps you find in the glue, so they don't clump under the paper once it is glued. It could screw him up.
- Be careful, the posting rules change from one region to another: find out before sticking anything on the walls in the street!
Step 2. Adhere the poster to a sticky surface
Proceed carefully, gently unwinding the document. This will give you a very flat surface.
If it's a large poster or if it's covering a large area, use a broom
Step 3. Apply glue to the poster as well
So apply a good layer of glue over the entire surface of the poster. It will dry by holding the poster firmly.
- If your glue is made from wheat flour, it may have small brown spots. If this is the case, do not force the glue so as not to discolor the poster.
- If you don't have enough time or glue to brush the entire surface of the poster, focus on the corners or edges.
Method 3 of 3: Make an artistic collage with flour-based glue
Step 1. Decorate objects with collages
The flour-based glue is ideal for creations embellished with paper.
Step 2. Recycle paper to make sculptures
The flour-based glue is strong enough to shape three-dimensional objects. However, you will need to add white glue or sugar to the base preparation so that it will hold perfectly when dry.
Step 3. Repair the book bindings
Many professional bookbinders prefer homemade glue to industrially produced glue. Otherwise, they use a mixture called PVA glue.
Some bookbinders recommend using starch for a clear glue
- Rice flour or starch can also be used to make a very strong glue. If you find other types of flour and starch, why not try making a smooth and effective glue by varying the amounts?
- The instructions remain the same whether you make half the amount of glue or double the doses.
- Starch-based glue can be more diluted than flour-based glue. Moreover, it is preferred by bookbinders who use it willingly to glue together delicate materials.