When the surface is completely covered, let the mosaic dry for at least 24 hours.
The glue must be completely dry before beginning the grouting process.
Mix approximately 200g.
grout with water in the ratio of 3:1, grout:water.
The mixture should be somewhat thick, like youghurt.
Too much water makes grouting more difficult! You can color the grout with pigments if you choose.
Let the mixture stand untouched for 5 minutes.
I use a kitchen spatula to spread the grout.
Spread the mixture with the side of the spatula, not with the end.
This requires less strength and is more effective as well! Remove excess grout on a regular basis, again using the side of the spatula.
Only then can you control the crevices to know if the grout has completely filled them.
The mirror will look pretty messy at this point but don't worry about it!
When you have finished grouting, let your work sit for 30-60 minutes, depending on temperature.
Use a dry cloth to rub out the surface of the mosaic - if the grout smears rather than turning to dust, wait a bit longer.
The flower magnets
can now be placed on their countermagnets, as desired.