Hello, Our company largest DS PCB manufacturer in Malaysia.We are encountering the soldermask skip problem.I give below the parameters used. M/C Burkle Curtain coater Ink Peters GL2469sm Viscosity 60to65 Beltspeed 78m/mim web weight 6.4to 6.8gms/600sqcm We use pattern plating process and plating thickness 40to 60 microns. The Sm skip is random and happens near closely spaced tracks(most of the times). I Shall be highly grateful if anyone can give info to minimise the sm skip problem. Thanks R.Srinivasan Likom PCB SDN BHD Malacca Malaysia E-mail :[log in to unmask]