I should mention Brad Birkhimer, who did most of the installation of the vent and fan. He's an incredibly nice guy, and an extremely talented potter. He has an MFA in clay from WVU, and also studied abroad in China. Now he's working out of a studio in The Plains, and teaching at The Workhouse Arts Center. And from where I sit, he seems capable of doing just about anything ceramics-related. So if you're in the Northern Virginia area and need your kiln tweaked, a vent installed, or a wood kiln set up, he's an excellent resource.
9 minutes ago