A disc-shaped percolator, usually stretching across the entire cylinder of a bong or dab rig, with a crosshatched hole design that resembles a waffle. Like all percolators, waffle percs filter and cool smoke or vapor during inhalation to create a smoother hit. Waffle percs typically produce larger bubbles and have a thicker design than other percolators.
“I prefer a showerhead perc to a waffle perc but both work well when smoking flower.”