The cutting method of Gyprock plasterboard is as follows: Scratch the panel with a knife and then cut the plasterboard from the scratch. Remember to mark the line on the front of the panel and cut from the back to the front.
Gyprock石膏板的切割方法是:用刀在面板上划痕，然后将石膏板从划痕处切割；切记务必要在面板的正面划线，由背面向前切割。
Gyprock’s Impactchek drywall features a fiberglass mesh layer on its back, so this side has to be cut before breaking, or one can choose to saw from the front of the plasterboard.
Gyprock 的 Impactchek 石膏板背面有玻璃纤维网层，所以在折断前也必须切割这一面，或者选择从石膏板的正面进行锯切。
Cut edges are to be smoothed as necessary to enable neat joints.
根据需要对切割边缘进行平滑处理，以保证接缝整齐。
The application of a metal T-square will contribute to creating a clean and straight cut.
金属 T 形尺的使用会使切割更加干净笔直。（见下图）
TIP: Site recessing tools are available to treat cut edges for easier jointing.
可用开槽工具处理切割边缘，以便于接合。
Reference:
参考文献：
- CSR红皮书 – 住宅和商业系统