The May issue of Corte & Conformação de Metais is online. A preview brings, on page 42, information on machines and equipment aimed at workpieces made from sheet metal to be exhibited at the 16^th edition of Feimafe Trade Show, which will be held in São Paulo from June 20^th to 24^th. See on page 18 the article “Application of plasma DLC films can increase the strength of steels”, where the deposition of coatings on metal parts subjected to treatment for the increase of hardness is the object of the study involving tests on specimens covering cutting and stamping operations. Read on page 26 the article “Determining the diameter of the solder button by non-destructive magnetic test”, presenting a method for the evaluation of joints made by spot welding by electric resistance that was developed based on the measurement of the residual magnetic field. This issue brings also the new “Seam welding machines” buyers’ guide.