改装一个新窗户并不总是容易的，因为你想要新窗户无缝地集成到现有的壁板。因此，在他进行任何削减之前，比尔建造了新窗户的外壳。套管的诀窍是，你想要增加1/4英寸。到套管和新窗户之间的嵌缝的内部尺寸。这有助于扩张和收缩。他还使用小螺丝和建筑粘合剂制作防水细木工。他先做外壳的原因是这样他就能有一个精确的模板来测量他的切口。接下来，他做了一个1/2英寸的切割指南。胶合板。切割导轨，也被称为射击板，引导锯子越过不平的壁板。 Bill makes sure to cut on both sides of the guide’s fence so the board can be used form either direction. Bill Robinson: What I’ve done here is set up my crosshair laser level to give me centerline on this window. What I’m going to do now is take my measurements off the center of this line here and extend them out either direction. That’s going to give me the marks I need to make to set up my shoot board to make the cuts and remove the siding. This casing is 58 3/8-in. wide. I’m going to leave a little room, so I’ll mark to cut the opening 58 1/2-in. wide. That’s 29 1/4-in. to the left and right from my center mark. Once I have my shoot board set up, I’m ready to make my cut. The next thing I have to do is set the depth of my cut. It’s better to cut to shallow than too deep so i don’t do any damage to housewrap or sheathing underneath. Now I’m…