Non-fired sculpting clay
Sugru is a soft moldable material that reminds me of Fimo clay. But unlike Fimo, it does not have to be heated to cure. It air drys and is rubbery and sticks to anything. I used it to make a new button for my utility knife when the plastic one broke. I made bumpers for my cell phone. I put some on my tools so they would not roll off the table. I am still discovering ways to use the product.
— Philip Lipton
This stuff comes in tiny pouches of different primary colors. You knead a bit with your hands until soft, then you apply it where you would like an additional grip, or stop, or section of repair. It’s pretty sticky, can be worked like clay, but dries into a hard rubber. The photo shows a paring knife handle that was falling apart from years of dishwasher use. I coated the outside with Sugru and it now it feels great and is dishwasher proof. See Sugru’s website for other ways it can be used.
(This is a Cool Tools Favorite from 2010 — editors)