More DIY shoe repair with Freesole urethane glue

Freesole urethane shoe glue saved another pair of shoes.

A well-loved pair of Keens that needed the toe caps re-glued. They were coming off and needed to be re-sealed with something that would also be flexible, and relatively watertight if properly applied. My shoe glue of choice is Freesole.

I store this adhesive in the freezer. Carefully cleaning the threads and pushing the glue all to the top of the tube before putting away helps ensure it is easy to open, and flows well for future use. Thawing it is easy, I just drop the tube, cap up, in a glass of hot tap water.

I gave the entire area inside the toe cap on my shoe a good coat of glue and then slowly eased the cap back into place. I used some elastic hair-ties, stolen from my daughter, to hold the cap in place.

24 hours later and the shoe is ready to go on a rainy day. Freesole has held on every pair I've used it on, including re-affixing the sole to a neoprene bootie. Good stuff!

Gear Aid Freesole urethane formula via Amazon Read the rest

New super-glue inspired by slug slime

Surgeons close internal incisions with stitches and staples but they, and their patients, would benefit from a glue that stays stuck even to wet tissue and organs. Researchers from McGill University in Montreal are making progress with a powerful new glue inspired by the the sticky slime secreted by scared slugs. Science News surveys the state-of-the-art in adhesives that take inspiration from marine worms, mussels, and geckos:

Using the (slug-inspired) glue to plug a hole in the pig heart worked so well that the heart still held in liquid after being inflated and deflated tens of thousands of times. (McGill University's Jianyu) Li, who did the research while at Harvard University, and colleagues also tested the glue in live rats with liver lacerations. It stopped the rats’ bleeding, and the animals didn’t appear to suffer any bad reaction from the adhesive...

One layer of the material is a polymer, a type of material made from long molecules built from many repeated subunits, like a string of beads. Positively charged appendages dangling off the polymers are drawn to wet tissue surfaces by the same forces underlying static electricity. This first layer weaves into another layer, a water-based gel. The gel layer acts like a shock absorber in a car, Li says. It soaks up energy that might otherwise dislodge or snap the adhesive.

Despite being 90 percent water, the material is both sticky and tough, Li says. The fact that it’s mostly water makes it more likely to be nontoxic to humans. Read the rest

My favorite super glue: Gorilla Super Glue Gel

Gel-based super glue is much easier to use than regular super glue, because it's thick and easier to control. You can apply a dab to a vertical surface without having it drip. It's also slightly tacky to begin with, which helps to keep parts stick together without holding them. And because it's thicker, it works well on porous surfaces, like the ones on this elephant coffee creamer that one of our cats broke. I've had the same tube of Gorilla Super Glue Gel for years. I've used it dozens of times, there's a lot left, and it shows no sign of drying up. A 15g bottle is just $5.80 on Amazon. Read the rest

Bondic: multipurpose liquid UV-curing plastic adhesive

Bondic is a UV-curing liquid plastic adhesive that can stick together materials that usually require different kinds of glues to bond. Read the rest