Maybe a good product for small repairs that don't have tension or pressure.
Have a small engine and piece of the cylinder outer wall where the carburetor was mounted was broken
Tried repairing it and degreased it and applied both sides with the JB Kwik-weld and had it cured for 24 hours but next day when mounting the carburetor it came off again. Looking at the repair the JB Kwik-weld was not cured.