Braided bread: how to prevent ropes from springing back
Patience, my friend!

If your dough springs back, you are in fact doing everything right. A good dough will be elastic, that means you can stretch the ropes to a certain point and beyond that, it will return to the original length - and after that, start tearing. If you leave the dough alone for a few minutes, the gluten strands in the dough will relax a bit, allowing you to stretch the ropes longer. Rinse and repeat...

Now I can see why working in intervals over, say, twenty minutes is not what you want. We want to get things done and probably have other stuff to do, right? But there are a few things that help:


Don't start with balls of dough, but with longish rolls. Take your dough portion for a strand, flatten slightly and roll it up lengthwise. If the dough is still flexible, hold your (left) thumb parallel to the long axis and (with the right hand) pull the dough over it section by section and seal the edge by pushing down. This will give you an even narrower strip to start with. (I posted some pictures in another answer, but work lengthwise, not crosswise as in that answer)
Alternate working on the individual strands. Always roll one only until you get just to the border where it starts to spring back, then take the next. By the time you are through your three / five / ... strands, the first will have relaxed enough to allow more stretching. Bonus: it's a lot easier to get all strands to the same length.