Thank you. You can get 4x4 squares 15¢ each at Lowe’s and a sheet of the 2x3 that I ran the tests (When curious, run tests) on is $2.99 (15 tiles on a mesh mat)
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Thank you. You can get 4x4 squares 15¢ each at Lowe’s and a sheet of the 2x3 that I ran the tests (When curious, run tests) on is $2.99 (15 tiles on a mesh mat)