Glue for cast iron?

Old 12-09-22, 03:26 AM
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Glue for cast iron?

My wife has a cross that is made of cast and a piece broke off of the base. Is there a glue that will actually do a good job holding cast together?
Old 12-09-22, 07:31 AM
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JB weld is sold as a metal epoxy but it this cross will not have a lot of stress applied any epoxy would work.
Old 12-09-22, 08:24 AM
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Depending on how heavy the pieces are and the gap between the pieces an epoxy would be the best choice. If it is cast aluminum or zinc and the pieces fit back together really tight then a regular two part epoxy glue can work. Thoroughly mix the glue (don't skimp on the mixing) and apply a thin layer to the joint. Then firmly press the pieces together and clamp to hold. Wipe off any glue that squirts out with a paper towel. Then use a paper towel or rag soaked with alcohol to remove the last bit of glue that seeped out.

If if is a crude break or possibly cast steel/iron where the is some gap to the joint then JB Weld would be a good option. It's more of a paste and is better at bridging a small gap. And, you can build up a "blob" on the back side to provide a bit more strength. Clean up with an alcohol soaked rag just like other epoxies.

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