I had a bunch of people email me for my plans to make a crab trap. Rather than reply to all of them, I thought I'd post it on here for everyone. First, let me say that these are not perfect, but they work good enough for me. The final trap measures 12" wide, 12" long and 6" high. Keep this in mind for when you bend the pieces.
1 roll of 1" x 1" welded wire-can be bought at Tractor Supply
snap rings-the kind you use to put hooks on fishing lures-I got mine at Wal-Mart.
String to pull the traps up
metal brake or some way to bend the wire. I used 2 2x4's with a hinge connecting them. I put the metal between them and closed the hinge.
1. Cutting the wire
Cut the 1st piece of wire so it measures 16 X 12
Cut the 2nd piece so it measures 24 x 12
Cut the 2 doors so they measure 6 x 12
2. Bending the wire
Bend the 1st piece so you have a "U" shaped piece: 2" down, 12" across and 2" up.
Bend the 2nd piece so you have a "U" shaped piece: 6" down, 12" across and 6" up.
3. Putting together
Now it is pretty simple to assemble. Use the snap rings to connect the two bent pieces together. There is only one way it can go. Now you should have a trap that is 12" long, 12" wide and 6" high. There will be a 4 x 12 opening on both ends. Get the doors and use the biggest snap rings to put them on (the bags of rings that I bought had different sizes). Now get about a 2' piece of string. Tie one end to the top of one of the doors. Thread it up through the top of trap and then down through the other side and tie it to the top of the other door. When the trap is laying flat, the door fall open. When you pull the string, the close trapping the crab inside. Take your float and put as much string on as you would need. Tie the swivel on to the end. The swivel is then used to snap onto the string on the trap. This makes it a lot easier when you are done for the day and are trying to clean up.
I'm not the best at describing how to make them, but this should get you started. If you can't figure it out, email me and I can send you some pics showing you step by step what I do. Good luck.