First thing you want to do is drill a pilot hole in the right location.
第一件事,你想要做的就是钻一个先导孔在正确的位置。
Here, Im using a drill press to drill pilot holes for the table scroll saw blade.
在这里,我使用的演练新闻界演练试验洞为表滚动锯片。
I used a mini drill press and bit for the pilot holes and then a table top scroll saw to cut out the Windows.
我用一个小型钻床和钻头的试验洞,然后一张桌子顶端滚动看到削减了窗户。
Application of inverse well drill will permit quick and safe excavation of pilot shaft.
应用反井钻机开挖导井可达到快速安全的效果。
Application of inverse well drill will permit quick and safe excavation of pilot shaft.
应用反井钻机开挖导井可达到快速安全的效果。
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