| 摘要 |
An offset router guide assembly for guiding the movement of a router around an outer edge of a structure having corners during rough cutting of a covering material overlying the structure to provide a predetermined overlap beyond the outer edge of the structure includes a base member having an aperture for passage of a router bit, and a guide member attached to the base member by a spacer member extending between the guide member and the base member to provide a gap therebetween. The guide member has a radius greater than the radius of the router bit for offsetting the router bit a predetermined distance from the outer edge of the structure corresponding to such predetermined overlap. The spacer member has a generally triangular cross section and fits entirely within an area between the base plate and guide member bounded by wall portions of the apertures in the base member and spacer member and the intersection of two arcs with the aperture wall portions and with each other. The centers of the arcs are on diametrically opposite sides of the guide member in a plane substantially perpendicular to the normal direction of travel of the guide member with the router, and have radii substantially equal to the sum of the radii of the guide member and router bit. |
