Sample in the middle of tabletop oilcloth, or this time tent plastic canvas

Here one can see the sample in the middle of the tent plastic canvas. The canvas shall be about 2 meters by 2 meters, this one is little larger. For larger canvas, more care must be taken to have proper mixing and removal of parts of sample during the quartering process.

This picture is negatively educationl. Do not repeat what you see on this picture.