Gregklu, uh, I guess you're right. I did this first with just wooden dowels, and, of course, with wood, you can cut it to the exact size. With rebar, it comes in set sizes, and, if you're like me, sawing a 3' piece of rebar down to 2'-6" size (or whatever it actually is) is nigh impossible. The larger, center piece of wood is pretty taxing with a hand saw, and that's as tough as I'd like to tackle. Now, for folks with a steel press or some other such facilities, this is a piece of cake, but for average joes, getting rebar to the exact right size is simply not possible. So how does one get the stability of steel rebar? Well, you use wooden dowels to fill the small difference between the 2' rebar piece (or pieces). That's why the wooden dowels are important. They fill the void between the plastic caps and the rebar, which would otherwise smack up against the insides of your tripod leg posts, possibly damaging them, definitely shifting their weight making them dangerous to move. Plus they'd make quite a clatter. The upgrade I outline above does not do this. It makes the legs heavier, sturdier, but not too heavy. It also doesn't cause unseemly outcomes. The weight, though heavier, doesn't shift when moved, because the components inside, if done right, do not jiggle about. They also should cause minimal to NO sound. And they shouldn't leak. At least this has been my experience. Don't skimp on the workmanship. Do it right and you'll be happy. I hope my instructions, with all this in mind, results in tripod legs with more heft, but also will not degrade the asthetic of ownership.