A surgical stapling anvil, comprising: an anvil body, comprising: a longitudinal slot configured to receive a firing member therethrough; and a tissue-facing surface comprising a plurality of staple-forming pockets defined therein; an anvil cap; and a plurality of welds welding said anvil cap and said anvil body together, wherein said welds comprise: a shallow-welded zone comprising a first weld depth; and a deep-welded zone comprising a second weld depth which is different than said first weld depth, wherein said shallow-welded zone and said deep-welded zone are configured to increase the net weld depth of said plurality of welds; and wherein the deep-welded zone of the anvil cap comprises an upper portion and a lower portion, and the shallow-welded zone of the anvil cap comprises an upper portion and a lower portion; wherein said anvil cap and said anvil body comprise corresponding alignment features configured to aid in aligning said anvil body and said anvil cap for welding, and wherein at least one of the corresponding alignment features comprises a flared body portion in the upper portion of the shallow-welded zone and a corresponding first alignment ledge, wherein the first alignment ledge is horizontal and on the anvil body, so that the flared body portion is configured to rest on the first alignment ledge; and wherein at least one of the corresponding alignment features comprises a second alignment ledge and a corresponding third alignment ledge, wherein the second alignment ledge is in the upper portion of the deep-welded zone and the corresponding third alignment ledge is on the anvil body so that the second alignment ledge is configured to rest on the corresponding third alignment ledge; wherein the first alignment ledge is a first distance from the tissue facing surface and the second alignment ledge is a second distance from the tissue facing surface and the first distance is greater than the second distance. an anvil body, comprising: a longitudinal slot configured to receive a firing member therethrough; and a tissue-facing surface comprising a plurality of staple-forming pockets defined therein; a longitudinal slot configured to receive a firing member therethrough; and a tissue-facing surface comprising a plurality of staple-forming pockets defined therein; an anvil cap; and a plurality of welds welding said anvil cap and said anvil body together, wherein said welds comprise: a shallow-welded zone comprising a first weld depth; and a deep-welded zone comprising a second weld depth which is different than said first weld depth, wherein said shallow-welded zone and said deep-welded zone are configured to increase the net weld depth of said plurality of welds; and wherein the deep-welded zone of the anvil cap comprises an upper portion and a lower portion, and the shallow-welded zone of the anvil cap comprises an upper portion and a lower portion; wherein said anvil cap and said anvil body comprise corresponding alignment features configured to aid in aligning said anvil body and said anvil cap for welding, and wherein at least one of the corresponding alignment features comprises a flared body portion in the upper portion of the shallow-welded zone and a corresponding first alignment ledge, wherein the first alignment ledge is horizontal and on the anvil body, so that the flared body portion is configured to rest on the first alignment ledge; and wherein at least one of the corresponding alignment features comprises a second alignment ledge and a corresponding third alignment ledge, wherein the second alignment ledge is in the upper portion of the deep-welded zone and the corresponding third alignment ledge is on the anvil body so that the second alignment ledge is configured to rest on the corresponding third alignment ledge; wherein the first alignment ledge is a first distance from the tissue facing surface and the second alignment ledge is a second distance from the tissue facing surface and the first distance is greater than the second distance. a shallow-welded zone comprising a first weld depth; and a deep-welded zone comprising a second weld depth which is different than said first weld depth, wherein said shallow-welded zone and said deep-welded zone are configured to increase the net weld depth of said plurality of welds; and wherein the deep-welded zone of the anvil cap comprises an upper portion and a lower portion, and the shallow-welded zone of the anvil cap comprises an upper portion and a lower portion; wherein said anvil cap and said anvil body comprise corresponding alignment features configured to aid in aligning said anvil body and said anvil cap for welding, and wherein at least one of the corresponding alignment features comprises a flared body portion in the upper portion of the shallow-welded zone and a corresponding first alignment ledge, wherein the first alignment ledge is horizontal and on the anvil body, so that the flared body portion is configured to rest on the first alignment ledge; and wherein at least one of the corresponding alignment features comprises a second alignment ledge and a corresponding third alignment ledge, wherein the second alignment ledge is in the upper portion of the deep-welded zone and the corresponding third alignment ledge is on the anvil body so that the second alignment ledge is configured to rest on the corresponding third alignment ledge; wherein the first alignment ledge is a first distance from the tissue facing surface and the second alignment ledge is a second distance from the tissue facing surface and the first distance is greater than the second distance.