I've come to the conclusion that installing a fan in the attic above my shop is a Good Thing (tm). Nevermind the lowest priced one I can find is 5x the fan needed for my space (less than 300sq ft).
But my trouble is that the outside of my shop is covered in stucco. I need to make the hole for the vent without completely destroying the surrounding stucco. I have never sawn into the stuff before and I really don't want to break chunks off that i'd have to unsuccessfully patch.
So far, the best idea i've come up with to mitigate the risk of really goofing it up is to draw the perimeter of the opening i need (probably a rectangle) with my wonder marker (sharpie). Then, with a borrowed hammer drill, drill holes like crazy around that perimeter. Say 1/4" holes every 1/4" or so - tedius, but i'm willing to work to ensure success.
Sawing into the stuff ... after the holes were drilled, I'd planned on using my jigsaw with a special masonry blade (if one exists?). I've also been pondering using my 7 1/4" circular saw with a concrete blade...
Is the drilling obnoxious overkill? Will sawing be fine? Do they make jigsaw blades that'd do the job?
Oh the questions! :P