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Space Launch System Core Stage: Plug Weld Tool

A completed dome on a holding fixture at the Plug Weld Tool (PWT).
A completed dome on a holding fixture at the Plug Weld Tool (PWT).

A completed dome on a holding fixture at the Plug Weld Tool (PWT). The PWT is a friction-stir-weld tool used to complete circumferential friction stir welds in the production of dome assemblies for NASA’s Space Launch System (SLS) core stage cryogenic tanks.

Image credit: NASA/MAF