That was after it had been on the wall for several years so i suggest that you check them periodically to make sure the disc is staying put.
How to fix ceramic plates on wall.
Use straight brush strokes and reload it with paint whenever it dries out.
Cut a piece of light grade sandpaper small enough to rub over the putty but not so large that it will rub the ceramic on either side of the putty.
Select the plates you want to hang on the wall.
This is my easy solution.
Using a pencil trace outline of each plate.
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How to arrange and hang plates on a wall.
Dip your brush into the paint and apply it to the patch.
Once you have the measurements readily marked on the wall you could neatly fix the nails and hang your plates accordingly.
Gently wipe the surface of the patch with a dry cloth to remove any dust from the sanding.
One of the number one questions i get asked on my blog is how i hang all the plates in my kitchen without using metal plate hangers.
Carefully using scissors cut out each plate circle.
Turn each plate upside down onto paper.
Lay white paper on a flat surface.
The top of the hanger should barely touch the flat surface that your plate is lying on.
Plates should vary in size and or shape for interest.
Slowly rub the putty down with sandpaper until it is level with the ceramic plate surface.
In case you find tracing the design a cumbersome job then you could put your creativity and sense of judgment to best use by marking the centre spot for fixing the plate which comes in the centre of the design.
Some of the plates i have used them with were really large and heavy and i have only had trouble with one of the discs coming loose from the plate and falling from the wall.
Paint over the patch to blend it into the tile and let it dry for 24 hours.