A high temperature additive manufacturing system (29) comprising a hightemperature additive manufacturing device (38) for providing a metallicdeposit (40);and a tooling system (30) comprising: a mandrel (32) for receiving, andprovidingshape to, the metallic deposit (40); a metallic cladding (34) applied to themandrel(32) for reducing contamination of the metallic deposit (40); and at least onecoolingchannel (36) associated with the mandrel (32) for removing heat from thesystem (30).
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