Apparatus for making electronic circuit boards

Apparatus for cutting into the surface of a flat circuit board blank to prepare an electronic circuit board comprising, in combination, (a) a worktable movably mounted on a base and supporting said flat circuit board blank during fabrication and having means for reciprocatively moving said worktable in a first direction and means for moving said worktable in incremental steps in a second direction perpendicular to said first direction, (b) an engraving head secured to said base and having a cutting style positioned to face said circuit board blank and capable of being advanced into a cutting mode or withdrawn into a non-cutting mode in response to an electric signal as said worktable moves in said first and second directions, (c) a photoelectric scanning means positioned to scan an electronic circuit layout and thereby generate an electronic signal corresonding to said electronic circuit layout, and (d) means for controlling the advancement or withdrawal of said cutting style into a cutting mode or a non-cutting mode in response to said electronic signal, in which said means further controls the withdrawal of the cutting style from the cutting mode to the non-cutting mode during the time said worktable travels 25 to 75 micrometers in said first direction.