http://www.AsktheBuilder.com founder Tim Carter demonstrates a cordless electric tool that cuts control joints in fresh concrete. More info here: http://www.bnproducts.com/bnrj-100/
Discover the why and how of concrete control joints:
http://www.askthebuilder.com/control-...
http://www.askthebuilder.com/concrete...
http://www.askthebuilder.com/concrete...