It works very well and will replicate bends easily. I use a high tech method to replicate bends. I mark the hub with a piece of chalk and then bend the next piece to were the chalk mark is. I used a Holden Barina hub which is common as muck here , Blackjack used a Ford Fiesta and I've heard some guys in the USA use Rabbit or Jack Rabbit(memories not so good) hub as well. It's a very flexible design that has at least 12 variants that I know of . It's Low Tech but it works. Here's where to find it.