I like a smaller pipes for flakes, at least starting out. The Peterson bulldog, the Stanwell bulldog shape 32, and
the Peterson Belgique, for examples. Group sizes are not definite, I know, but a small Group 4 (medium size
pipe) or a Group 3 are good, though the Belgique is a Group 1, tiny but okay for slow burning flake. I'm sure
flake goes well in large/extra large pipes, once you have a range on the blend, but in my experience, flakes
burn slow, so a small or medium size pipe will often give you a good long smoke. A small pipe will waste less
tobacco while you learn to rub out, fold, or otherwise pack flake, which involves a learning curve. With many
others, I do love flake tobacco; it's a pleasure. Get some kind of shallow bowl to do your rubbing out or folding,
so you don't scatter any of the goodness.