This week I worked on my moulds; 160 pcs. It is made of chipboard and coated it with a wood glue so that water won't be absorbed. I also prepared cement, sand, and gravel for next week's task. I used my friend's abandoned house as my workshop 
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cutting the chipboard with a grinder
3cm & 5cm (thickness) moulds
sand and gravel
40 kg cement
wood glue
