Sketch model of my alginate moulder. I have decided to roll alginate (a quick drying mould) onto the weathered walls to pick up all the cracks, chips, holes and erosion. I began testing out the alginate today however it didn't set properly so i am going to have to try again this weekend.

I have decided to make the main body of the roller out of plastic (available at the chelsea shop), metal for the connection and wood to make an ergonomic handle.

Once I have got the alginate mould I am going to cast it in clay and wax to see the different effects, and then take some rubbings of the final models.