"Pat it up" often refers to the final step in fluffing up a vacuum-sealed product, like a or a duvet insert , to help it regain its original loft and volume. In a creative context, it can also mean applying material, like the "performance art" of patting gum onto Seattle's famous Gum Wall.
In design, a "solid piece" refers to a 3D object created from cross-sectional profiles. pat_it_up
Since you're looking for a "solid piece," here are a few ways to interpret that: 1. The "Lofty" Piece (Home & Comfort) "Pat it up" often refers to the final
Which "piece" were you thinking of? I can give you more or creative ideas if you let me know the topic! Seattle's Gum Wall: An Oral History like a or a duvet insert