This is glue made from milk, vinegar and baking soda. It is stronger than elmers glue and is very inexpensive. It is my entry to the amazon.com and instructables science fair group.
Step 1: Materials
Heres what you need:
Milk(mooo juice)no whole milk
Paper Towel or Coffee Filter
2 Dixie Cups
Step 2: Making It
Mix 4 tablespoons of milk to 2 tablespoons of vinegar or a 2:1 ratio of milk to vinegar. Mix with the popsicle sticks for about a minute or until there are tiny lumps when you take out the popsicle.
Step 3: Finishing Touches
Take your paper towel and set it on the paper cup. Then push down oncenter of the towel into the cup, making a small indentation. Pour in the milk and vinegar mixture and let it set for a couple of seconds. Then pick up the towel with the lumps (curds) in it and roll it, as in the picture. Squeeze the bottom to drain more liquid (whey) out. Open the towel and lay it on wherever you're working. Take the popsicle stick and scrape it all into a pile. Add a pinch of baking soda and stir it for 30 seconds. After a minute it will turn light brown and most of the clumps will disappear. It is now done. Spread a thin layer of the glue over whatever you're gluing. A little goes a long way.
Step 4: How It Works
Milk is a source of casein,a sticky protein, which is made of complex chains of amino acids. It is used to make glue, nail polish and also to make medical pills as a binding agent, which is a material used to make solid pills from loose powders.