George Lucas never made the armour. the company that did is still issuing out armour and on their site is a price list I know it's expensive, but it could totally be awesome if you got it. It's only in Euros tho
Here is another link that might prove a little more useful but nonetheless ordering is involved. But he tells and shows most how he did it.
And one last link for now that may prove useful. I looked at a couple pages and most of the tools look like they're found at home. I believe velcro and PVC piping is what was used for most. But check these out and see if they help.
See Kairu, the problem is I already looked at all of those pages and none of them tell you, except the first one which is too expensive for me, to get the stuff to make the costume.
Well, PVC pipes aren't working... So I'm going to try foam and cut it and form it until I can make it just right.
Problems with the PVC
Can't Form it
Too Heavy
Hard to Cut
Only thing the PVC will work with is maybe the hand plates for the gloves, the thermal detonator on the belt, some parts of the belt... and that's about it.