Usually, I make around 300mL of iced coffee. Here's how I do it:

1. Weigh 100g of ice cubes, put in the carafe, and store in the freezer.
2. I use 18g of medium roasted arabica, and grind it medium coarse (similar to pour over size)
3. Put the coffee ground in Hario Switch and add 200g of boiled water.
4. Stir and let it brew for 5 minutes.
5. Decant the coffee into the carafe (nr. 1).
6. Give a good stirr until all the ice cube melt, and enjoy it directly or put in the fridge for later.

I hope it helps.