the wire tightly and evenly spaced every time leaving you with perfectly twisted wire for your project and at about $20-30 USD they are not priced out of the range of most budgets.
The devices and jigs can get pretty elaborate depending on the needs of the crafter. People fond of DIY projects have found all sorts of uses for bent wire like this phone cradle to rings made entirely of bent silver wire, necklaces, earrings and bracelets are also common projects.
If making items of bent wire is something you find yourself doing often enough perhaps one of these specialized tools can make the task easier. I am a firm believer in using the right tool for the right job because it makes life much less stressful - especially when the job is a repetitive one. Since wire bending needs very little in the way of explanation I will let the pictures do the story telling.
To find out more, simple searches using words like 'wire jig' or 'wire bending pliers' or even 'wire bending projects' will turn up loads of pages and resources. Also try using an image search instead of a web search when looking for information a lot of times you can "see" what you are looking for and then use the words they use in the description to refine your search.
Until next month "get out there and make something!"