Muffler weld glues and other epoxy formulas are designed for the repair of cracks in cast iron and other metals. Cast iron expands when heated and existing cracks open up, which compromises the sealing ability of the iron. When an appropriate epoxy glue is correctly mixed and applied to a cracked cast iron surface, the epoxy seals the crack and expands and contracts with the iron during heating and cooling. You can prepare the cracked surface and apply the sealant with a few tools and basic do-it-yourself skills. Does this Spark an idea?
Instructions
1. Clean the surface of the cast iron that surrounds the crack using a wire brush. Remove any existing paint or rust.
2. Sand the area over the crack with coarse sandpaper. Wipe the surface clean after sanding with a shop towel.
3. Dispense equal portions of the epoxy glue hardener and the bonding agent from each of the two containers onto a disposable dinner plate. Mix the two together thoroughly with a small putty knife.
4. Apply the epoxy glue into and over the crack using the putty knife. Form the shape or pattern of the glue as required for the most effective seal.
5. Follow the manufacturer's instructions regarding drying and curing time.
Tags: epoxy glue, crack using, over crack, putty knife
