Pressing Screen 16"×16" – All Mesh Wacky Willy says, "Blotting your Bubble will reduce drying time and help prevent mold". The 16' x 16' surface is perfect for pressing larger batches or pressing multiple grades at the same time.  Wacky Willy’s 25 micron all mesh pressing screens are used after the extraction and filtration process to efficiently dry your botanical products and bubble hash crystals.  The food grade all mesh nylon material ensures that your product stays clean and dries quickly.