Fireplace Mantel Makeover, Part 1

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This part gets really mathy:  I measured out the width of the fireplace area and subtracted 3 inches, 1 1/2 for each side to allow for 3/4″ MDF and 3/4″ trim.  It was a bit tricky to be precise here because we have rounded corners so there’s no exact spot to measure from.  I tried to measure right before the rounded edge started, I think it was about 68 inches or so, but obviously you will take your own measurements.  I also made the depth of the hearth just enough so that the 2×4 sat right in front of the floor tile.  It’s about 20 inches.

Then I built a structure like this.  Pocket holes for the bridge pieces to connect the two frames, the two frames I used 2 1/2″ Spax screws (which are my favorite because they self drive easily into the wood using an impact driver.)  I also used glue on the joints.  I additionally added metal brackets on the joints to help prevent it from ever swaying side to side since it’s a free-standing structure.