The disadvantage of this method is that all outside edges are on the bias. Far better to use the 2 - at a time method, or 8 - at a time method. The 4 - at a time method also results in outside edges on the bias.
Actually, I meant that when you said some people like to make oversized triangles so that they can square them up by trimming them. I am curious as to how they take the dimensions of a pattern yet are able to cut out bigger triangles. This way, when they go to square them up they have more fabric to work with. Perhaps you can demonstrate this technique in another video. Tx
Ah, I get your question now. To get an oversized HST that you can trim down, you would shift your ruler up a bit before cutting. In the example in the video we lined up the ruler exactly on the 2 1/2" marks. To make it a bit oversized you could line your ruler up on the 2 5/8" marks.
Thank you, I’m glad you thought it is a good beginner tutorial. I get your point about waste. Cutting HSTs from strips doesn’t create too much waste if the strips are not much bigger than the HST size. I recommend some wiggle room in size, especially for beginners, but you could play with cutting narrower strips to reduce waste. I mostly use this method for 2 1/2” strips that I already have in my stash.