Editing Drypoint (section)

===Hand-wiping techniques===
Drypoint wiping techniques vary slightly from other intaglio techniques.  Less pressure is applied to achieve desirable lines, because the burrs forming the image are more fragile than etched or engraved lines, but also because the ink rests on the plate surface, instead of pressed down into indentations.  Also, because of the characteristics of the way the burrs catch ink, the direction of the wiping matters.  Ink tends to pile up in the lee of the burr during the application of the ink and wiping with the tarlatan, so if the printer wipes in the direction of the lines with their hand, they may remove most of the ink, leaving a light gray line.  However, if they wipe perpendicularly to the line, they can actually increase the pile of ink on the other side of the line, darkening the printed line.