초록 ▼

The present invention involves building sheets with a plurality of grooves indented into a surface of the building sheet to provide a guide for cutting the building sheet along the grooves. Preferably, the grooves are arranged in a regularly repeating pattern and are spaced apart by a standard unit

The present invention involves building sheets with a plurality of grooves indented into a surface of the building sheet to provide a guide for cutting the building sheet along the grooves. Preferably, the grooves are arranged in a regularly repeating pattern and are spaced apart by a standard unit of measurement in order for a cutter to accurately size the building sheet to a precise dimension. A simple scoring knife is preferably used to score the sheet along the grooves, without the need for a straight edge, and the sheet is broken by simply bending the sheet of along the score mark. The grooves are preferably provided at a depth into the surface the sheet such that they do not substantially decrease the strength of the sheet or affect off-groove scoring. Thus, a score mark can be made between or across grooves without deflection of the mark into a groove and without breakage of the sheet along a groove when the sheet is bent.

대표청구항 ▼

1. A method of cutting a building sheet having at least one guide groove formed into a face of the building sheet, wherein the guide groove is formed at a first depth such that the application of force at the guide groove will not result in the board breaking, comprising:scoring the building sheet a

1. A method of cutting a building sheet having at least one guide groove formed into a face of the building sheet, wherein the guide groove is formed at a first depth such that the application of force at the guide groove will not result in the board breaking, comprising:scoring the building sheet at a desired location on a surface of the sheet, the scoring of the sheet forming a score mark in the surface, wherein the score mark has a depth greater than the first depth such that the application of force at the score mark will result in the board breaking; andbending the sheet along the score mark to break the sheet. 2. The method of claim 1, wherein the sheet is scored using a knifepoint. 3. The method of claim 1, wherein the sheet is scored such that the score mark lies within and substantially along the guide groove. 4. The method of claim 1, wherein the sheet is scored such that the score mark lies substantially outside the guide groove. 5. The method of claim 4, wherein the score mark cuts across at least one guide groove. 6. The method of claim 5, wherein the score mark extends diagonally across the building sheet. 7. The method of claim 1, wherein the first depth is less than about 25% of the thickness of the building sheet. 8. The method of claim 7, wherein the first depth is less than about 15% of the thickness of the building sheet. 9. The method of claim 1, wherein the first depth is between about 0.01 to 0.06 inch and the thickness of the building sheet is about ¼ inch.