By sintering wires to flat metallic blocks, diffusion interfaces were obtained between the following pairs of metals: Cu‐Ni, Au‐Ag, Cu‐Ag, Cu‐Fe, Fe‐Ni, Cu‐Zn, Ni‐Zn, and 70/30 brass‐Cu. The interfaces were subsequently investigated metallographically. Grooves were observed in the lower melting point component in the vicinity of the sintered interfaces. This is attributed to the faster diffusion rate in the lower melting point metal.