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“Ken,” the author of this interesting tutorial on tinting hot-melt adhesive sticks by adding crayons, appears to know his chemistry, but is otherwise fairly anonymous. He claims that “[y]ou can also add up to 10% by weight of paraffin wax to reduce the viscosity without sacrificing bond strength.” Looks like he used a ratio of half-a-crayon to three whole glue sticks, melted in a small tin, to achieve the vivid orange color shown in his nicely-presented phototutorial. Apart from its use as an adhesive, ethylene vinyl acetate—especially the higher-melting “industrial” formulations—can have useful structural applications. [via Hack a Day]

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.


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