“For getting the waffles out,” Maichel said, “a wooden chopstick is good because you can get it under there. Don’t use any metal … if [the plate] gets scratched, it’ll turn into a sticky spot.” In testing, we found that chopsticks were also useful for scraping out burned bits that got stuck in the Presto FlipSide, and tongs with silicone or nylon heads worked well for removing waffles, too.
This model is also equipped with an on/off switch, which people with large kitchens may find useful, as it makes it easier to keep it set up on a counter without having to unplug after each use (especially helpful if your outlets are in inconvenient places, and repeatedly plugging and unplugging is a hassle). It makes two seven-inch waffles at a time, with a two-minute recovery time, allowing you to make waffles for a crowd. The flip function means it evenly cooks thicker and thinner batters alike and requires less batter to fill edge to edge.
This arrangement is quite clever but contains a small design flaw -- the electrical plug is on the hinge side of the trunion mounting. It rotates 180 degrees and in doing so creates a flex in the cord; eventually, the cord will show mechanical failure at the flex-point as illustrated below. This "flaw" can be used in authenticating the cord that goes with the "Twin-O-Matic". However, safe operation requires an intact and properly insulated cord.
In 1971, Oregon track coach and Nike Co-founder Bill Bowerman used his wife's waffle iron to experiment with the idea of using waffle-ironed rubber to create a new sole for footwear that would grip but be lightweight; hence making easier for individual's to be able to increase their speed. Oregon's Hayward Field, where he worked, was transitioning to an artificial surface and "Bill wanted a sole without spikes that could grip equally well on grass or bark dust." He was talking to his wife about this puzzle over breakfast, when the waffle iron idea came into play.  Bowerman's design inspiration led to the introduction of the so-called "Moon Shoe" in 1972, so named because the waffle tread was said to resemble the footprints left by astronauts on the moon. Further refinement resulted in the "Waffle Trainer" in 1974, which helped fuel the explosive growth of Blue Ribbon Sports/Nike.
Brussels waffles are prepared with an egg-white-leavened or yeast-leavened batter, traditionally an ale yeast; occasionally both types of leavening are used together. They are lighter, crisper and have larger pockets compared to other European waffle varieties, and are easy to differentiate from Liège Waffles by their rectangular sides. In Belgium, most waffles are served warm by street vendors and dusted with confectioner's sugar, though in tourist areas they might be topped with whipped cream, soft fruit or chocolate spread. Variants of the Brussels waffles – with whipped and folded egg whites cooked in large rectangular forms – date from the 18th century. However, the oldest recognized reference to "Gaufres de Bruxelles" (Brussels Waffles) by name is attributed from 1842/43 to Florian Dacher, a Swiss baker in Ghent, Belgium, who had previously worked under pastry chefs in central Brussels. Philippe Cauderlier would later publish Dacher's recipe in the 1874 edition of his recipe book "La Pâtisserie et la Confiture". Maximilien Consael, another Ghent chef, had claimed to have invented the waffles in 1839, though there's no written record of him either naming or selling the waffles until his participation in the 1856 Brussels Fair. Neither man created the recipe; they simply popularized and formalized an existing recipe as the Brussels waffle.