Roger sets granite steps on a bed of ice to melt them into place. Plaster contractor Bob Bucco repairs plaster by hand, while 3D printing specialist David Kempskie shows how the repairs can also be made in a computer, thanks to state-of-the-art technology. Norm and Tom review the design options for the front porch railing, then get to work fabricating the balustrade, which features a flat stock baluster that is custom made on site. In the second half of the hour, on ASK THIS OLD HOUSE, Richard helps a homeowner in New Hampshire quiet a squealing shower. Kevin installs a DIY-friendly security system and video camera. And the guys ask, "What is it?"
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