I found these years ago after seeing them on a stand at a SMW. They are by a Japanese guy who made a loads of simple cards models from SciFi films (ie SW & ST). Unfortunately he pulled his site after his models got reposted and plagiarized.
As I'm a bit cheap and like a challenge from these simple models I've printed them at A5 rather than A4 size. I've not got the instructions either but I'm assuming I can work it out looking at pics.
As they three are very similar I shall just post one of the builds #3 Louie.
Cutting cards parts out if very tedious so I do anything that can speed up the process. Basically try to do as much as possible with the card part and tools held in one position.
1. Make all the horiztonal cuts on the part in one go, then rotate the card and repeat the process.
2. If duplicate parts are aligned placed your ruler across them and duplicate the cuts at the same time.
3. I free hand cut the tabs, again making all the same angle cuts together
... and then rotating the card to make the others.
I score parts with a blunt sewing needle in a pin-vice and use the same techniques are above. In addition to make small marks on the right side so that I can see where to score on the reverse.
It's easier to stick parts to a flat surface then a constructed box. Here I've stuck the three main subsection to the body before the later is glued together.
