For this purpose, provide a plate of copper, rather larger than the design that is to be engraved, and may be about one sixteenth of an inch thick; planish by rubbing it, first, directly length-wise, and afterwards breadth-wise with a piece of pumice-stone, which may be dipped occasionally in a mixture of one part nitric…

Prep Time: 11 mins · Servings: 2 Ingredients 1/4 cup old-fashioned oats or quick oats1 banana chopped into chunks and frozen1/2 cup unsweetened almond milk1 tablespoon creamy peanut butter1/2 tablespoon pure maple syrup plus additional to taste1/2 teaspoon pure vanilla extract1/2 teaspoon ground cinnamon1/8 teaspoon kosher saltIce (optional) Preparation Then brush over the copy or…