Tests were conducted to investigate possibilities of electroforming low‐stress nickel microwave plumbing. Two methods were studied: use of saccharin as an addition agent in a standard Watts bath, and superimposition of alternating current on direct current. Saccharin reduces stress in nickel deposited from the Watts bath; however, it is unstable, provides erratic results, and is difficult to control. Superimposing alternating current on direct current reduces stress considerably in nickel deposited from the Watts bath. Results verify and extend findings of previous investigations showing that stresses as low as 2,000 psi can be obtained by superimposing 60‐cycle alternating current on direct current in Watts bath.