enough from the artwork for the uv light to get between the artwork and the board check for burrs again once you have removed the backing sheet just before exposure. through-plating when laying out double-sided boards, give some thought to how top connections will be made. some components (e.g. resistors...
machinery ducting systems ductings and pipings frp/grp duel action hand spray gun duel fuel burners duel media filters duel sensors duel set point temperature controllers duel type relay kits duffle bag dull finish dumb bell cutters dumb waiter lifts dumbbells dumbwaiter lifts dumet wires dummy resistors...
machinery ducting systems ductings and pipings frp/grp duel action hand spray gun duel fuel burners duel media filters duel sensors duel set point temperature controllers duel type relay kits duffle bag dull finish dumb bell cutters dumb waiter lifts dumbbells dumbwaiter lifts dumet wires dummy resistors...