The Great Wall

 

Retaining wall of interlocking landscape blocks

Made from blocks poured in hand made plywood moulds

 

Preparing  for the first row

This is the mould concept: the 2x2 framework supports removable panels which slip out when the cement is firm, eliminating the need for greasing the moulds.

A bottom insert 3/4”  thick, and 1 inch short at the back end to form the lip that interlocks with the row below. 

Wedges are driven between the 2x2 frame and the removable panels the tighten up the mould  - when these are removed, the sides slip right out leaving the finished block. Stepping up production! three continuous moulds forming 6 blocks each. We released them from the moulds after 4 hours by pulling out the 1/4” side panels and carefully stacked them to finish drying.

The pvc pieces that were inserted to reduce the weight and amount of cement needed were removed after 2 hours   The hand turned cement mixer – it rolls on large fixed casters mounted on the work table. We forgot to remove the pvc  “holes” in time - had to cut this batch down.