695 B
695 B
Demould!
Once the concrete starts to turn to a lighter grey, it is getting close to hard enough to remove your formwork. We waited for 36 hours so as to be sure it was set well enough to remain standing, but you may want to refer to the manufacturer’s specifications for the cement that you use, as well as details like the ambient temperature, which will affect the speed with which it sets. If in doubt, wait longer before starting this step.
To demould, we started by undoing any fasteners we had at the top layer, and removing the bracing. Bricks were easily removed by rocking them back and forth, to lift them off the teeth underneath. Hot glue where used will break off easily.