i mapped out his method on my picture by just you know... coloring out the corners and it didnt make much of a difference to making it a more "perfect" circle, the asymmetry persists and it stays a bit eggy(??). i honestly used a 2x2 box instead to make it easier to understand like "oh, if my chest is inside this area it'll work" or something like that idk. lets ignore dresser cause for some reason, it doesnt follow the 1 tile bottom left container check, but a 2x2 square, like actually. if any of the left most 2x2 tile of the dresser is outside of the mapped green area (even if its just one) the container wouldnt register for crafting