Bests & Worsts Reviews from Amazon

and this is great stuff. some pointers Epoxy glues have a limited shelf life. Buy yours at a small store where the merchandise doesn't move quickly, or keep it 5 years on the shelf and it won't work as well. Don't apply it at temperatures below 60 degrees. Spend at least 2 or 3 minutes mixing it. I use a timer to be sure. Surface preparation is the key. It must be completely grease free. I use naptha (lighter fluid) if the part is very greasy, then alcohol, and acetone in that order. Or better yet, brake cleaner or Gun Scrubber, neither of which appear to leave any trace. Whatever, clean surfaces as much as you think , then some more. The surface MUST be rough. I use a file,very rough (#40 or #60) sandpaper or a sharp Exacto blade to make multiple cross hatch cuts- this will even work on most steels . Roughness and cuts increase the surface area, if the cuts are done right at an angle , undercut, they can also make the glue hold better.Don't touch the cleaned area after cleaning with bare fingers Mix a bit more than you need , larger quantities are easier to mix 50-50. Apply the mix carefully, put the pieces together so they don't move for at least 8 hours. You can speed up setting by placing the part in the sun on a warm day. I use an oven set at 100 degrees F for small parts. It is best to wait for initial l tackiness before doing this. J B Weld is very slow drying. Do all that and the bond is very strong . Re shelf - the makers of epoxy say it has a long (years) shelf life, but only if unopened. I prefer fresh stuff , why take chances on critical jobs . If it's nor important feel free to try/