A first embodiment of a non-adjustable single cylindrical lip boring tool includes a shank, a body, a straight side lip, and a front cutting edge. The shank is formed on an end opposite the body. The straight side cutting lip is formed on the body. The straight side lip has a radially convoluted relief...http://www.google.de/patents/US6206619?utm_source=gb-gplus-sharePatent US6206619 - Non-adjustable single cylindrical lip boring tool