I'm not sure if this is the right place to ask.

We're trying to run 3/4" conduit through wood and stucco to our main panel outside. We have a 3/8" shank drill and a 3/4" mortar bit. Since the 3/4" is the inside diameter of the conduit, that's not big enough (not to mention the bit is very long and looks like it would be scary to wield). I have found a 1-1/4" hole saw with a carbide tip that will fit our drill, but I think the outside diameter of the conduit is only 1". I'd like to be able to get this work done soon and without having to buy a whole new drill. Is that possible? Is there another way to get this done?

Any help would be appreciated!

 

You could drill a 1.25" hole and just caulk the extra room. I wouldn't, but you could. Any excuse to buy a new tool is good.

 

I've just been thru this. Go ahead and use your 3/4" bit. Wobble it in the hole to open up the stucco a bit. Then use a tiger saw with a blade called "the axe" to open up the wood beyond. Takes just a few minutes, and is a great excuse to buy a new tiger saw!!!!