Outdoor PTZ corner install help

[ipinstall]

Hi,

I'm installing 4 PTZ's using corner mounting brackets into the 4 corners of my house.

I need some advice on drilling holes into the wall for the cables to run through.
I need to drill fairly accurately to get the holes from the corner of the inside wall to within the corner bracket for 2 of the cameras
and need some advice on doing this as best as possible?

Are there any tools which may help me do this?

The hole will be around 17 inches long.
Do I drill a small guide hole from outside into the house and patch up the mistakes on the inside and keep trying to find the right 'spot'?

Any help will be much appreciated.

 

[Phil]

We're probably not THE best placed to advise on this install challenge (all 'desk jockeys' with soft hands now ).
To accurately drill 'through the corner' sounds challenging.
Must you arrive behind the bracket, exactly in the corner?
An alternative might be to go through the wall either side of the corner into the back of a weatherproof box, and then kopex from that into the camera externally.