When I first saw my house, I fell in love with the front porch that runs along the entire front side. It's huge (about 8' x 35') and the perfect spot for a porch swing.
However, I'm a hair under 6'2 and I used to play rugby so I am most assuredly not petite or dainty. When I tried to find a nice swing to put up in my awesome porch I couldn't find any that were even remotely acceptable. They were all too small, too uncomfortable, too flimsy, and just generally not right.
So, I did some poking around the internets and found several designs that had elements that I liked. I made a shopping list and one trip to the hardware store later and I had a couple of hundred dollars worth of stain-grade lumber and various bits of chain and other hardware...
Step 1: Getting started.
This was probably the hardest part of the project. The basic criteria for the swing was that it should seat at least 3 average to large-sized adults and it should not feel flimsy.
Even though I had a general design in place, some details (like the angle between the back and the seat) were still TBD and since I didn't want to waste any of the not-so-cheap wood I bought, I did a lot of measuring and note taking. I wasn't concerned with specific dimensions as much as finding something comfortable so I looked around at various benches and seats. I
In the end the small bench you see in this photo actually contributed the angle for the back to the seat, the width came from another chair I found and the seating depth was based on the length of my own legs (that also determined its final hanging height which was noted by some of my shorter friends and family who feel a bit small on it)