Accidentally dropping the tank lid to your toilet and helplessly watching as it cracks in half is frustrating. Many toilets are made of porcelain, which is quite durable, but unfortunately not immune to chips and breaks. With small chips and cracks that are not located on a critical part of the toilet, repair is possible with glue. This can save substantial money, as replacing a toilet can be costly.
Clean the area between the break with a solution of dish soap and water to remove any grease or dirt. If it's a fresh crack, simply wipe away dust with a tissue.
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Spread a thin layer of craft bond cement or super glue along one surface, leaving the other clean.
Press the two sections together and hold until the pieces bond. This might take a few seconds, or as much as a minute.
Wait 24 hours before use. Scrape away excess glue with a razor blade.
Open the bathroom window to prevent breathing potentially hazardous fumes.
Repairs to working parts of the toilet, such as the tank or the bowl, often end in failure. It is best to replace the entire unit if a crack or break causes a leak.