| 摘要 |
The preparation of a pair of abutting straight edges of a pair of wallboard panels for receiving spackle to provide smooth planar butt joints includes the use of a rotary tool having a tool bit to form a channel extending on both sides of the butt joint after the wallboard panels have been installed. After the formation of the channel, spackling of the butt joint in a conventional manner results in a smooth planar finished surface. |
