Impact-resistant Interior Wall ★★★

Taken all the way down to base materials, one Impact-resistant Interior Wall is 2 crafting steps deep and needs 1 intermediate — Iron Plating ×1 — which resolves to 1 distinct raw material totalling 1 unit.

That is the lightest raw-material bill on the site, tied with 3,129 other recipes, and 4,464 recipes nest deeper.

The chain crosses two disciplines — Goldsmith to Lv 100 and Armorer to Lv 100 — so no single class can finish it unaided.

The single raw material does not appear in the gathering data, so the whole bill comes from vendors, drops or content this site does not track.

Of the intermediates, Iron Plating has the widest use: 2 recipes call for it, spanning two of the eight crafting classes.

Nothing in the data consumes Impact-resistant Interior Wall: it is one of 216 end products among the 250 Goldsmith recipes at Lv 100.