Finally

... I bought some grout when I went into town on Wednesday. This is hardly great art, but it was good practice. And I am pleased with the very pale grey of the grout, exactly what I wanted: 150 g of white grout with a teaspoon of black pigment. Not happy with the experimental bubbly bits -- I think I need to fill the gaps with glitter or small beads.

Pouring again ... half the night and much of today. So another very quiet day at home. The weather forecast predicts sunshine for tomorrow: here's hoping.