Look for yourself on your computer, is my suggestion. There are plenty of metal brake/bender demos on u-toob, along with construction details for more than a few.. Most use available metal sections so one only needs a hacksaw and drilling kit.

Rolls are a different matter, I would think. As above, sizes and precision might depend on whether it was for jewellery (for instance) or 12” to the foot scale models.

.

That ^^^ is an interesting response to the opening question from a new forum member:

[quote] Can anyone recommend … [/quote]

… Not sure quite how the process would work.

MichaelG.

For the bender, if you want it for thin metal, look up the David Gingery book on the Camden Miniature Steam Services book (my tablet won't paste links in this forum, sorry). I have a copy and can recommend the design as clear, concise and eminently practical. The only down side is that, as it's American, the sizes are imperial.

Regards

Richard.

Are you after rolling and bending wide sheets or narrow strips? If the latter a pair of bars in the vice for bending and a set of scroll formers for curves might be easier.

Brian