【在 r**m 的大作中提到】 : thx, 最后又买了几个新钻头,凑合弄完了。就差没上titanium 钻头, : 网上查了一下说有的stucco里有金属网,而且如果有走电线的话,可能有 : metal box or tube 保护,所以是有可能钻到金属的。
s*e
12 楼
肯定是里面碰到什么东西了。随便普通的masonry bit钻水泥都很简单。
a*f
13 楼
美国的水泥墙也没钢筋吗?
x*u
14 楼
He was drilling stucco, which is different from concrete. Steel bracing within concrete walls are usually a few inches deep into the wall. You wouldn't reach them for any normal kind of drilling.