What can I do if the worksurface pattern is too large for the worksurface?

You may encounter drilling scenarios where less than 50% of the Reference Pattern and the corresponding Alignment Pattern are visible on the worksurface. This can occur if you are drilling on a small worksurface such as on the edge of a 2x4. The best approach in this case is to use a BullseyeBore Worksurface Extension Plate. A BullseyeBore Worksurface Extension Plate is a flat aluminum circular plate that can be held in place on the flat worksurface to “extend” it so the worksurface patterns are fully visible. Further, if the entire length of drill bit is not required for the drilling operation, an optional Chuck Extension accessory may be incorporated to reduce the Alignment Pattern size at the start of drilling.