Ask This Old House

Mauro Henrique shows a homeowner the right technique and materials to paint his unfinished wood stair treads and handrail; the team shares a few new tools they've been using lately- a scribe tool, electronic earmuffs, and a standing sod cutter; Heath Eastman installs new wall sconces above a fireplace that had originally had them but were covered up by the previous owner.

Ross Trethewey travels to Austin to visit a company that is building homes using 3D printing to learn about the process and how they differ from classic stick-built homes; AskTOH spotlights Aaron Smith, a dedicated landscaper in Detroit who is making a difference through community-focused and sustainable initiatives; Tom Silva and Kevin O'Connor use a lathe to turn a square bowl with legs.

Mauro Henrique helps a homeowner paint his wainscoting by using an airless sprayer; Kevin O'Connor, Ross Trethewey, and Heath Eastman discuss how a growing number of homes are going all electric and how it compares with fossil fuels. They share what homeowners should research before making the switch; Nathan Gilbert helps two young brothers build a sandbox for their very own digging area.

Nathan Gilbert transforms a homeowner's hanging bathroom medicine cabinet into a recessed medicine cabinet; Mark McCullough replaces a chimney crown that is causing water damage to a homeowner's indoor charcoal grill; Mark shows Kevin O'Connor some of the little pieces of history he's found while doing masonry work over the years.