Not being able to justify an AXA or BXA set (due to the lathe being non-income producing, among other reasons) I came up with a quick and dirty substitute. I have a lantern post that is the biggest that will fit into my compound slot (~2"). I made a ring that is just flat rather than a rocker curve. Since all of the cheap tool bits are carbide, they don't care about rake angle like a HSS bit would. A couple of Christmases back, I made 3 or 4 different sizes of straight holders and a boring bar that would hold 3/16 & 1/4 bits. I can use bits from 3/16 to 1" square (whatever I found at the surplus bits-by-the-pound store, or at HF). I just set the center height with flat shims. Obviously, NOT good enough for Government work, but good enough for home.
BTW, I'm celebrating a Birthday. My 15" Sydney Lathe is 100 this year!