I sawed down a broom handle for cannoli tubes. But if you are not in a hurry, the online options by others look good. Lots of copper cookware exists, so I would only worry about any treatment or liner of the metal.
I am in the market for something that shreds and slices. I have a Kitchenaid stand mixer and use the grinder attachment regularly. So I am leaning toward the slicer/shredder attachment but would like to hear from people who have used the device before buying, in case a mini-processor is the way to go.