The invention provides a processing method of a seal mounting groove in a metal plate, which can form the seal mounting groove with a small pressing pressure, whereby it is possible to respond to request for easily manufacturing and achieving a low cost, and can achieve a problem caused by a protruding phenomenon of a metal which plastically deforms going with formation of the seal mounting groove. In order to achieve the object, in a method of pressing a seal mounting groove by using a punch on a plane of a metal plate, a leading end portion of the punch is formed into an inclined surface shape which is inclined in a punch width direction, and the seal mounting groove which inclines in a groove width direction in its groove bottom portion and is formed into an inclined surface shape is formed by pressing while using the punch.

A groove cutter for floor sheets which is a tool capable of being operated without using a ruler and can cut a seam, which is created when sheets are laid sequentially on the surface of floor base with an adhesive agent, so that a groove formed along the seam can bridge over both adjacent sheets, comprising a front part, a middle part, a rear part, wherein the front part has a thin guide plate, which is to be inserted into the seam and guides the said tool along the said seam when pushing the tool forward, at the front end, and at least one blade to cut a concave groove at the seam part of the above sheet, which is provided behind the guide plate so as to be detachable, and also a stabilizing member provided at the rear part, which is to be inserted into the concave groove, to stabilize a direction of movement of the tool along the seam.

A method for manufacturing panels such that the panels are subjected on at least one side to an operation with cutting tools. The position and/or orientation of each panel is determined prior to the operation, and the position and/or orientation of each panel is adjusted prior to the operation and/or the position of the tools is potentially adjusted, such that at least one part of each panel concerned takes a fixed orientation and position in relation to the tools.

A method for manufacturing panels such that the panels are subjected on at least one side to an operation with cutting tools. The position and/or orientation of each panel is determined prior to the operation, and the position and/or orientation of each panel is adjusted prior to the operation and/or the position of the tools is potentially adjusted, such that at least one part of each panel concerned takes a fixed orientation and position in relation to the tools.

A mineral wool cutting tool, configured to create a channel within a surface of a sheet of mineral wool, includes a sled configured to rest on and move along the surface of the mineral wool, a blade extending below the sled and having a closed profile and a sharpened edge configured to cut a plug from the mineral wool, and a handle extending above the sled and graspable by a user for moving the sled along the mineral wool.