Concrete Countertops

[f350ca]

While we're on the subject of tools, I used an old vibrating sander with a wooden block attached to vibrate the concrete the last couple of times. Again it works but could be better. I've seen cement pourers use a flexible shaft that vibrates to do footings and walls. They lower it into the wet concrete, and the mix instantly becomes fluid. I assume the end moves in and out. Wonder what you'd need for stroke and at what frequency.