Build idea

Picture frame with splined miters

I made this Share a photo of your version.

an oak picture frame with dark corner splines around a soft watercolor print concept — not a real build.

A red oak frame for an 8 x 10 picture, with contrasting walnut keys crossing the mitered corners. The key slots are cut after glue-up with a shop-made jig that rides the table-saw fence.

Rough size
About 11 3/8 in wide x 13 3/8 in tall x 3/4 in thick
Wood
Red oak, Walnut for the keys

Tools you might use

  • Table saw with blade guard, riving knife, and push sticks
  • Saw blade with flat-top-grind teeth and a full 1/8" kerf, such as a rip blade, so the key slots have flat bottoms
  • Miter saw or table-saw miter sled
  • Router table
  • Shop-made spline jig
  • Band clamp or strap clamp with corner blocks
  • Flush-cut saw, block plane or sanding block, and utility knife
  • Accurate 45° and 90° squares, combination square, and tape measure
  • Drill
  • Random-orbit sander or sanding block, 120–220 grit

Key techniques

Diagram of the finished picture frame. Front view: a mitered frame 11 3/8 inches wide and 13 3/8 inches tall, with 2-inch-wide sides around a 7 3/8 by 9 3/8-inch opening that shows an 8 by 10-inch picture. Edge view of a long side: the frame is 3/4 inch thick, and at each end a 1/8-inch walnut key, centered on the thickness, shows as a stripe running about 1 3/4 inches along the outside edge from the corner.
Diagram of the finished piece. Sizes are approximate, not a tested plan. Reader build photos welcome.

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