The cement mixers are really covered in cement and Calum is explaining what the stuff is.
Callum is telling us what the stuff in the bags is it is stones and sand for making the concrete.
Calum is telling us about how to make the cement for the Polycroo and how he bent the long plastic tubes so they slot into the little tubes. They were filling the planters with earth today too.
The weather is windy today but dry.
By Robin
