On Jul 31, 3:49*pm, wrote:
On Tue, 31 Jul 2012 12:59:56 -0400, "dadiOH" wrote:
Vinny P. wrote:
I mounted an 802.11 WiFi antenna and was dismayed to find two drill
bits dulled (I don't think I've dulled more than that in my entire
life) just trying to drill an inch through stucco to mount an antenna.

There is 'something' as hard as a steel beam one inch under the stucco
near the roofline that just can't be drilled through.

What could possibly be there (in the wall?)?

Steel, probably. *Once you are through the stucco switch to a regular twist
bit - masonry bits are good for masonry, not much else - and try your luck.

This is not entirely true. *When I encounter steel that is hard to
drill, and dulls all the standard twist drill bits, I always grab a
carbide tipped masonry drill bit. *It may be slow, but it always bores
thru the steel. *The key is to run the drill slow and apply moderate
pressure to the drill.


My house is stucco and from time to time I have tried to drill a hole
outside and failed -- just won't work. I even bought an electric
drill just for that purpose. My late husband had a battery operated
drill and it was never strong enough to drill anywhere on stucco. The
new one will work -- but in certain places it won't. Think there must
be those steel plates...or something near the edges of windows.