Martingale collars are a very popular choice for dog trainers. They are not a severe as a regular choke collar since they cannot infinetly tighten and choke the dog. This instructable will show you how to make a martingale collar from scratch.
I have recently started a DIY pet blog called
Bloggie Stylish where you can find other cool tutorials like this one.
You will need some sort of webbing. There are many kinds out there like cotton, polypropylene and nylon. Three D-rings, which you can scavenge off of an old collar. Scissors. I have two pairs, one for cutting and a small pair of trimming scissors for cutting the threads. A flexible measuring tape for measuring your dog's neck. A sewing machine (that's a given) and sewing thread.
dog boutique
Check out these designer dog collars I made!