Why can't I drill into my window frame? My walls are concrete block, but it seems like I hit steel about a 1/2 inch in. I am using a cobalt bit. -
Why can't I drill into my window frame? My walls are concrete block, but it seems like I hit steel about a 1/2 inch in. I am using a cobalt bit. -
![200 X Metal Window Frame Anchor Fixing with Screw M10 X 152Mm - Hardware Nut And Bolt Sets - Amazon.com 200 X Metal Window Frame Anchor Fixing with Screw M10 X 152Mm - Hardware Nut And Bolt Sets - Amazon.com](https://m.media-amazon.com/images/I/31jKNpFUcOL._AC_UF1000,1000_QL80_.jpg)
200 X Metal Window Frame Anchor Fixing with Screw M10 X 152Mm - Hardware Nut And Bolt Sets - Amazon.com
![AVID POWER Drill Bit Set, High Speed Steel Titanium Drill and Screwdriver Bit Set with Case for Metal, Wood and Masonry, 100 Pieces - Amazon.com AVID POWER Drill Bit Set, High Speed Steel Titanium Drill and Screwdriver Bit Set with Case for Metal, Wood and Masonry, 100 Pieces - Amazon.com](https://m.media-amazon.com/images/I/71J-olw7WzL._AC_UF350,350_QL80_.jpg)
AVID POWER Drill Bit Set, High Speed Steel Titanium Drill and Screwdriver Bit Set with Case for Metal, Wood and Masonry, 100 Pieces - Amazon.com
Why can't I drill into my window frame? My walls are concrete block, but it seems like I hit steel about a 1/2 inch in. I am using a cobalt bit. -
![AVID POWER Drill Bit Set, High Speed Steel Titanium Drill and Screwdriver Bit Set with Case for Metal, Wood and Masonry, 100 Pieces - Amazon.com AVID POWER Drill Bit Set, High Speed Steel Titanium Drill and Screwdriver Bit Set with Case for Metal, Wood and Masonry, 100 Pieces - Amazon.com](https://m.media-amazon.com/images/I/61A9TXQd6eL._AC_UF350,350_QL80_.jpg)
AVID POWER Drill Bit Set, High Speed Steel Titanium Drill and Screwdriver Bit Set with Case for Metal, Wood and Masonry, 100 Pieces - Amazon.com
![AVID POWER Drill Bit Set, High Speed Steel Titanium Drill and Screwdriver Bit Set with Case for Metal, Wood and Masonry, 100 Pieces - Amazon.com AVID POWER Drill Bit Set, High Speed Steel Titanium Drill and Screwdriver Bit Set with Case for Metal, Wood and Masonry, 100 Pieces - Amazon.com](https://m.media-amazon.com/images/I/81u7hUqIp2L.jpg)
AVID POWER Drill Bit Set, High Speed Steel Titanium Drill and Screwdriver Bit Set with Case for Metal, Wood and Masonry, 100 Pieces - Amazon.com
![interior - What is my drill hitting and not penetrating when I hang curtains? - Home Improvement Stack Exchange interior - What is my drill hitting and not penetrating when I hang curtains? - Home Improvement Stack Exchange](https://i.stack.imgur.com/vIsB4.jpg)