Casein glue
Casein glue
Casein glue is a type of adhesive made from milk protein. The glue is known to be very strong over a long period of time and is resistant to water. It has a longer drying time (clamp your piece of work for 2 – 4 hours). There have been many uses for casein glue throughout history. There are records that show it was created and used by the ancient Egyptians. It was employed in the Middle Ages to bind together thin panels into thicker plates on which artists could paint. It also is believed to be used by makers of famous musical instruments that have lasted for a century or more. It was used extensively in woodworking, furniture making and even to assemble early wooden aircraft (WW2 fighter aircraft).
The process of creating this glue is nearly identical to that of making cheese and can easily be performed at home. There are various recipes to be found online. The most basic ones only contain: skimmed milk (powder), vinegar, baking soda and water. Replacing baking soda with slaked lime gives a more durable and water resistant glue.
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Low Energy Casein has a lower embodied energy than wood glue and all the other synthetic glues. |
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Low cost Home made casein glue made from scratch is low cost. However if you buy ready made casein powder at art supply stores, you pay more. Non toxic Casein glue contains no solvents or VOC's. However, some of the recipes contain chemicals that can be hazardous and irritant to the skin. Be careful with DIY chemistry. Easy reuse Dried casein powder (available at art supply stores) has an unlimited shelf life. |
Time consuming Making casein glue at home is more time consuming then buying a ready made wood glue.
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Bulky Glued wooden constructions are non disassemblable so it takes more space and increases energy use in transportation.
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Long lifespan Creates a strong water resistant bond for wood (check recipes). Especially for interior use. Non toxic There is no offgassing of any toxic gasses that could be harmful for the user. |
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Easy recycling Casein glue is safe to incinerate. |
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Other Connections
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Examples on Harvestmap.org