Thanks Dave! I didn't know about a core drill! Then I did a little
searching. Now that's a testosterone drill!
http://shop.store.yahoo.com/toolsplus/flebh812vv.html
It sounds like the one you're talking about is even bigger!
As for the running the ducting to the garage, it sounds like a good idea
to skip it. I'll find other interesting way to keep warm...
Happy Holidays!
Justin
Dave C wrote:
>> My question is: what's the best way to drill a 4" hole through concrete?
>
> Everyone else seemed to answer a bunch of questions you didn't ask, so
> I'll answer the one you did. The best way would be to go to a good
> industrial tool rental place and rent a core drill. It's like a hole
> saw on steroids. It has it's own motor and tripod, all you need to add
> is power and water. Rebar and the reinforcing aggregate won't be a
> problem; the diamond edged cutter will cut through them just like
> butter. When you are finished you'll have a perfect hole with
> practically polished sides, a nice concrete core that will make a good
> door stop, and a big puddle of water full of concrete dust. If you hire
> a concrete cutting company, that's exactly what they will do, too.
>
> As for humidity and excess duct length, the other guys had some real
> good advice. I'd listen to it.
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