A manufacturing process, comprising: forming a thrust reverser cascade for an aircraft propulsion system, the forming of the thrust reverser cascade comprising: stamping a first panel of material into a first corrugated body, wherein the first corrugated body includes one or more first corrugated body corrugations arranged end-to-end along a length thereof, each of the one or more first corrugated body corrugations includes a first corrugated body first section and a first corrugated body second section, and a first end of the first corrugated body first section meets and is connected to a first end of the first corrugated body second section at a first corrugated body intra-corrugation peak; stamping a second panel of material into a second corrugated body, wherein the second corrugated body includes one or more second corrugated body corrugations arranged end-to-end along a length thereof, each of the one or more second corrugated body corrugations includes a second corrugated body first section and a second corrugated body second section, and a first end of the second corrugated body first section meets and is connected to a first end of the second corrugated body second section at a second corrugated body intra-corrugation peak; and bonding the first corrugated body to the second corrugated body, characterised in that the first corrugated body intra-corrugation peak is aligned with and bonded to the second corrugated body intra-corrugation peak. forming a thrust reverser cascade for an aircraft propulsion system, the forming of the thrust reverser cascade comprising: stamping a first panel of material into a first corrugated body, wherein the first corrugated body includes one or more first corrugated body corrugations arranged end-to-end along a length thereof, each of the one or more first corrugated body corrugations includes a first corrugated body first section and a first corrugated body second section, and a first end of the first corrugated body first section meets and is connected to a first end of the first corrugated body second section at a first corrugated body intra-corrugation peak; stamping a second panel of material into a second corrugated body, wherein the second corrugated body includes one or more second corrugated body corrugations arranged end-to-end along a length thereof, each of the one or more second corrugated body corrugations includes a second corrugated body first section and a second corrugated body second section, and a first end of the second corrugated body first section meets and is connected to a first end of the second corrugated body second section at a second corrugated body intra-corrugation peak; and bonding the first corrugated body to the second corrugated body, characterised in that the first corrugated body intra-corrugation peak is aligned with and bonded to the second corrugated body intra-corrugation peak. stamping a first panel of material into a first corrugated body, wherein the first corrugated body includes one or more first corrugated body corrugations arranged end-to-end along a length thereof, each of the one or more first corrugated body corrugations includes a first corrugated body first section and a first corrugated body second section, and a first end of the first corrugated body first section meets and is connected to a first end of the first corrugated body second section at a first corrugated body intra-corrugation peak; stamping a second panel of material into a second corrugated body, wherein the second corrugated body includes one or more second corrugated body corrugations arranged end-to-end along a length thereof, each of the one or more second corrugated body corrugations includes a second corrugated body first section and a second corrugated body second section, and a first end of the second corrugated body first section meets and is connected to a first end of the second corrugated body second section at a second corrugated body intra-corrugation peak; and bonding the first corrugated body to the second corrugated body, characterised in that the first corrugated body intra-corrugation peak is aligned with and bonded to the second corrugated body intra-corrugation peak.