How to repair a broken ceramic toilet（lavatory） tank lid

Tools and Materials Needed
Epoxy or Ceramic Repair Kit: Specifically designed for ceramic toilet materials.
Sandpaper: Fine-grit, for smoothing the repaired area.
Clean Cloths: For pre and post-repair cleaning.
Rubbing Alcohol: Helps in cleaning the area for better adhesion.
Protective Gloves: To protect your hands during the repair process.
Clamps (Optional): To hold the pieces in place while the adhesive cures.
Paint (Optional): To match the color of the toilet tank lid if necessary.
Steps to Repair a Broken Ceramic Toilet bowl Tank Lid
1. Prepare the Broken Pieces:
Carefully collect all the broken pieces of the lid.
Clean each piece with rubbing alcohol and a cloth to remove any dirt or grease.
2. Mix the Epoxy:
Follow the instructions on your epoxy or ceramic repair kit to mix the adhesive components properly.
3. Apply the Epoxy:
Apply a thin layer of mixed epoxy along the edges of one of the broken pieces.
Carefully join it with the corresponding piece.
Wipe away any excess epoxy with a cloth before it hardens.
4. Secure the Pieces:
If possible, use clamps to hold the pieces together firmly as the epoxy cures.
Ensure that the alignment is correct and the lid is as close to its original shape as possible.
5. Let it Cure:
Allow the epoxy to cure for the time specified in the instructions, usually several hours or overnight.
6. Sand the Repaired Area:
Once the epoxy is completely dry, gently sand the repaired area to ensure it's smooth and even.
7. Clean and Paint (If Necessary):
Clean off any sanding dust.
If needed, paint the repaired area to match the rest of the lid.
8. Final Inspection:
Check the repair for any sharp edges or uneven surfaces.
Place the lid back on the tank and ensure it fits properly.
Additional Tips
Handle With Care: Ceramic Water Closet lids can be quite fragile, especially after being repaired.
Match the Epoxy Color: Try to use an epoxy color that matches the lid to minimize the visibility of the repair.
Test the Strength: Once cured, gently test the strength of the repair to ensure it can withstand normal use.
Consider Replacement: If the lid is extensively damaged or if the repair does not seem stable, consider purchasing a new lid for safety and aesthetics.
If you're not confident in your ability to repair the lid, or if the damage is too severe, it might be a better option to replace the lid. Many hardware stores sell replacement lids, or you can contact the manufacturer of your toilet for a replacement part.