The best way to make something from stone is by soaking it in water.
That is, soaking it, then soaking it again in water to create a more durable material.
The process is called stone-washing.
We need to know the water temperature, the water depth and the time it takes to make the stone.
The water temperature and the depth will depend on the stone’s structure and its water content.
If the water is too cold, it may take longer.
And the water content is also a factor.
We should check the depth with a stone-simmering instrument like a water jug.
We will also need a thermometer to check the temperature of the water.
It takes about 45 minutes to make about 100 kilos of stone.