Using only a single steel, say 1080, or 1095, or 15N20 - only one of those steels stacked up won't give much of a pattern at all. With good work and etching you might see a slight trace of a pattern, but nothing like the Damascus contrasting pattern normally looked for.
Normally you're looking for the nice shiny of 15N20 contrasting with the deep blacks of 1080/1095, etc.
Normally you're looking for the nice shiny of 15N20 contrasting with the deep blacks of 1080/1095, etc.