Laser-assisted double-wire welding with nontransferred arc (LDNA) is characterized by two converging wires between which an electrical arc burns to melt both wires. The molten material falling onto the substrate is distributed with oscillating laser radiation with a power of 1.5 kW to ensure sufficient bonding with the substrate without delamination and pores. The process is characterized by high deposition rates of more than 7.5 kg/h. Due to the high deposition rate, only high values for waviness in the buildup direction can be achieved in the production of multilayer additive structures. The approach investigated in this publication examines the potential to produce additive structures with a confined melt pool. The use of water-cooled copper jaws and the deposition of ER70S-6 between these confinements using the LDNA process are being investigated to produce additive 10mm wide and 100mm long structures with significantly improved waviness in the direction of buildup and improved dimensional accuracy. It can be shown that a wall-like structure can be welded between the confinements without material bonding to the cooling jaws. Additionally, it has been observed that the confinements can easily be removed which is attributed to the thermal contraction of the steel. Metallographic examinations of the produced structures in the longitudinal and transverse sections as well as hardness curves in the transverse section are carried out and evaluated. Multilayer structures with up to five layers are produced and the waviness and surface roughness on the side surfaces defined by the jaws are measured and evaluated.