Test sample: Original Cold-Weld Formula applied to both bond surfaces of low-carbon steel sample pieces and squeezed together with hand pressure. The J-B Weld Company's original product line focused on a small number of products: J-B Weld (original 2-tube epoxy), J-B Kwik (4-hour epoxy), J-B Stik ( epoxy putty), Waterweld (underwater adhesive/filler), and a few others. [4]

J-B Weld can be used to bond surfaces made from metal, porcelain, ceramic, glass, marble, PVC, ABS, concrete, fiberglass, wood, fabric, or paper. [7] [8] Alcohol should be avoided when cleaning surfaces, as it can degrade the bond. [9] Two-part epoxy is one of those must-have items in your toolbox, albeit kept in a ziploc bag to keep all that goo off the rest of your tools. It’s a glue with a million uses, but which brand is best? Should you keep some cheap five-minute epoxy around, or should you splurge for the fancy, long-setting JB Weld. It’s not a perfect analysis, but at least [Project Farm] has done the experiment. This is a test of which two-part epoxy you can find at your local home supply store is strongest. Price. Some adhesives are much more expensive than others, and there are a lot of different reasons why. One is overall strength, and while you may want the strongest glue possible, it might not be necessary to spend the extra money if you don't need industrial-strength glue. Some qualities can cost more and might not apply to your situation, like semi-permanent glues. My encounter with JB-Weld at Tractor Supply was an itch I had to scratch. I bought two types of J-B Weld and brought them into the Popular Mechanics shop in an attempt to find out, just how tough this repair material really is. Most epoxies add strength to a joint when the epoxy-joint layer is minimized. Epoxy, in and of itself, doesn’t carry strength. Its the cross-linking nature of the epoxy establishing bonds between the materials forming the joint. Long spans (think gaps) between the articles forming the joint creates a weak bond- the epoxy is making longer bonds to the materials to be joined. A thin gap is best. JB Weld has small metallic materials in suspension, so some gap filling will work with this original formulation.Product Features And Strength: J-B Weld Plasticweld Has Lap Shear Strength Of 600 Psi. Plasticweld Can Withstand Continuous Temperatures Up To 250Of (121Oc) And Intermittent Temperatures Up To 300Of (148Oc) When Fully Cured. Plasticweld Does Not Shrink And Can Be Molded, Shaped, Sanded, Drilled And Cut It is a good idea to clean the surfaces with methylated spirit or cellulose thinners and to roughen the surfaces before applying. The Plastic Padding Super Steel Epoxy Weld is a dark-grey coloured, metal-filled, two-component adhesive, which sets like steel and is ideal for emergency repairs around the home, garden, farm, car, boat etc.

Electric Insulation. You can find plenty of plastic automotive glue that works as an electric insulator. If you're looking to secure exterior pieces or seal a seam, this may not be necessary. However, don’t forget how much wiring there is in your vehicle. The amount of electrical parts means there are plenty of interior locations and spots in the engine that need extra electricity protection. So, what do these results tell us? Cheap five-minute epoxy isn’t terrible, and actually better than the fancy new versions of JB Weld. Loctite is okay, and the Devcon and original JB Weld are at the top of their game. That’s not that surprising, as you can cast cylinder heads for engines out of JB Weld. The company had its beginnings in 1969 [3] in Sulphur Springs, Texas. Sam Bonham, at the time running a machine shop, discovered a way to create what he called a "tougher than steel" epoxy. [3] In 1968, Sam's future wife Mary persuaded him to sell his invention and he founded the J-B Weld Company. Sam died suddenly in 1989. He had commented before his death, "My life's dream is for J-B Weld to be all the way around the world, and for me to see an 18-wheeler load out of here with nothing but J-B Weld." [3] Within a year of his death, Mary had opened a European hub in London, internationalizing the J-B Weld Company and the distribution of the product. [3] J-B Kwik (stylized as J-B KWIK) is a two-part epoxy, intended as an adhesive or filler, that can withstand medium-temperature environments (up to 300°F or 149°C). [14]

Container Size. The amount of automotive glue you need depends on what you're trying to accomplish and how often you plan to use it. If you only have a small area to fix, then a small-sized container should handle the job. Mechanics will most likely want a larger portion or multiple containers to handle a more significant workload.