Hi with the current cheapness of chinese pcb houses i have started exporting my gerbers there, But on several occations i have been warnd that there are missing solder mask openings.see photo attached.
now all of the components are from the master libary, most of missing solder masks are on capacitors but not all capacitore there seems to be a random dispertion of missing solder masks.
examining the layer on gerber viewer coroberates the missing solder masks, even when i manually put a solder mask onto the board it still fails to propergate through
can someone help please