Will a larger size always look exactly like the smaller version?

Not necessarily. People often assume that scaling is visually neutral, but it rarely is. A larger object may reveal different surface behavior, alter the perceived thickness of details, change the balance of the design, or require production adjustments that make it feel slightly different from the smaller version. Likewise, reducing an object too much can make certain details disappear or make the final result feel less legible. So while the underlying form may stay the same, the visual and material experience of the object can still change with scale. That is not a flaw. It is just the reality of making real three-dimensional things rather than flat digital previews.