The top beam is a 4x4 inch piece of pressure-treated lumber 72 inches long. All of the remaining pieces are 2x4 inch pressure-treated lumber.
I like the small size of this swing. Initially, it will just have 1 swing baby seat. Later, it could have 2 swings on it, since the beam is 6 feet wide. Our grand-daughter is only 1 year old right now.
The 4 legs were the hardest pieces to make. The process I used was:
1. Print out paper pattern full scale from sketchup of top of leg with angles.
2. Glue paper pattern onto top of leg
3. Cut small 20 degree angle on miter saw
4. Cut long taper on band-saw, using roller height support to hold up other end
5. Cut to length with 20 degree taper on bottom on miter saw
I temporarily installed a short piece of 4x4 on the top of 1 side of the swing, so the 2 legs would be in the proper position. I clamped the 2 legs to my table plywood top, to get the right angle, which I determined by measuring the bottom spread of the legs. I used 2.5 inch long deck screws and yellow Tite-Bond glue on all joints.
It took me about 5 hours to make the 2 side assemblies and cut the top to length.
My wife picked out and ordered the seat from Amazon. She selected one that works for infants, then later for larger kids.