I'm a bit confused by this step:
① Dissolve 500 g of Potassium Hydroxide in the mixture from step ⑦ above and stir with a long stick. Place the Potassium Hydroxide in a plastic beaker, add 500 cc of water, and stir lightly with a stick; it will dissolve with high heat. Be cautious of gas inhalation. Aluminum containers cannot be used. If Potassium Hydroxide is not pre-dissolved, JS cannot be mixed transparently.
Do add 500cc of water to 500g KOH and then add to the mixture from step 7 or ?