主权项 |
1. A tool for forming impressions in concrete material, comprising:
a single-piece, molded, shaped, framework of cured flexible material consisting of polyurethane or polyuria in a shape of a pattern, the cured material having a memory property configured to return to an original state such that the framework is capable of being folded multiple times or rolled, and then unfolded or unrolled to return to the original state without distorting the shape of the pattern, the framework configured to be pressed into the base material to leave an impression in the concrete in the shape of the pattern. |