Neurorad
Senior Member
Definitely get a flex bit with the screw tip. 3/4" is probably fine, unless you were fishing hdmi connectors. Don't even consider using a flex bit without that screw tip. I have wasted hours of my life dealing with a crappy flex bit, without the tip.
I have the handle/positioner, and it helps a lot.
Install the LV bracket into the drywall cutout before drilling the bottom plate - it will help prevent the edges of the drywall cutout from getting screwed up by the shaft.
If you're worried about hitting pipes, you can drill a small test hole first, 18" long shaft ~1/8" bit, and you can then snake a 14 gauge Romex conductor through, to see where it comes out below. I too have used a much thinner wire and smaller hole, to help with locating, when drilling down through hardwood floor (trying to locate the wall from below).
HD/Lowes have some flex bits in stock, as do your local electrical supply houses.
If you're working with someone, as W2P said, get the flex bit with the pierced tip, so the cable(s) can be pulled back through the hole with the bit. Not sure if the bits with the screw tip have the hole - not a deal breaker, get the screw tip.
I have the handle/positioner, and it helps a lot.
Install the LV bracket into the drywall cutout before drilling the bottom plate - it will help prevent the edges of the drywall cutout from getting screwed up by the shaft.
If you're worried about hitting pipes, you can drill a small test hole first, 18" long shaft ~1/8" bit, and you can then snake a 14 gauge Romex conductor through, to see where it comes out below. I too have used a much thinner wire and smaller hole, to help with locating, when drilling down through hardwood floor (trying to locate the wall from below).
HD/Lowes have some flex bits in stock, as do your local electrical supply houses.
If you're working with someone, as W2P said, get the flex bit with the pierced tip, so the cable(s) can be pulled back through the hole with the bit. Not sure if the bits with the screw tip have the hole - not a deal breaker, get the screw tip.