Make small cordwood discs cut by a chop saw and sanded flat on both sides.
The first step would be thoroughly cleaning the floor you want to work on. Then, lay out the cordwood discs.
Begin to layout the disks on the floor getting them as close as possible.
When the optimal disc pattern is discovered, glue each one directly to the floor.
Sand the glued discs, using a belt sander until everything is smooth and leveled.
Then fill the gaps with grout.
Once they were all laid down properly, the next step would be to seal them with a light coating of polyurethane to ensure the grout wouldn’t adhere to the tops.
You can add further second or third coat of polyurethane for everything to be smooth and shiny.
This is great flooring idea for every room in your house.