We have made the shuttering to fit the sink and hob, making sure we have left enough space for any connections.
We have used a mix of 3 Portland Cement White
2 silver sand
1 Canterbury Spa, mix of stones and shells
1 mix of red and green glass
To avoid cracks we are using a damp proof matting and strengthening the slab with strips of metal, we used chicken wire, however it comes in a roll and tends to bend itself back, we are going to cut down some old metal coat hangers and use the varying lengths to strengthen around the sink and hob.