In a process to cut a fine aperture for e.g. an automotive fuel injection jet, the hole is cut using an abrasive fluid directed at pre-defined high pressure. The volume of fluid passing through the hole is monitored, and on reaching a predetermined value a...

The machining process involves machining a through aperture (10). An abrasive fluid is applied to one side of the aperture at grinding pressure, and counter pressure is applied to the other side. The counter pressure is first set roughly equal to the grind...

An abrasive liquid slurry for polishing and radiusing microholes comprises: a liquid medium; finely divided abrasive particles, wherein the slurry is characterized in that the abrasive particles remain uniformly distributed when the slurry is not subjected...

The method involves using a nozzle element (12) with at least one nozzle channel (16) that is narrower than a target diameter and conducting an abrasive medium through the channel to abrade material and enlarge the channel. The abrasive medium is a mixture...