Bah. IMNSHO when I need a saw I need something reasonably sizable. Hence why I totally
avoid those little SAK Saws, "survival saws" and other and such cruft - any time I've used them in the field for anything more than hobby sawing, they're too small or break. . The sawzall blade looks a lot like what I do take when I take a saw - a lightweight folding japanese pruning saw. The sawzall blade is probably a lot cheaper <img src="/forums/images/graemlins/smile.gif" alt="" /> So if anything I'd say leave it as it is - or don't bother <img src="/forums/images/graemlins/smile.gif" alt="" /> (If you were determined to have a tiny one - there are
smaller sawzall blades)

Just to put that in perspective though, I ususally take a saw when I expect to have to do fieldcraft like building a tripod, single tree, and/or sawing down the backbone of a magnificent ex-forest creature to quarter it. I don't find a saw that useful for getting firewood in a backpacking type environment - since it's typically small deadfall a small
axe is a zillion times better - you don't need to saw nice even logs, and you're typically not
burning big logs.