It was long ago, I don't remember, may be I did it accidentally... Yes, I checked all bases. How can I add an item to my save or where can I get the instruction?
Sure, I'll tell you what to do in 10 easy steps. I don't know how computer literate you are, so I'll be as specific as I can. If I'm too slow, don't take it personally.
1.
Open your save in a text editor. Make a backup copy of a save you want to edit.
2. Open your save in a text editor. (Notepad++ is fine, EditPad is fine; your average Notepad should be fine too, but I've never been brave enough to try it. We're hackers, not idiots.)
3. Search for something like this:
items:
Make sure that there are exactly 4 spaces in front of the "items:" string! No more, no less. Get it?
4. Right under this "items:" thingy you have a list of items in this particular base (Yes, we're looking at raw data for one of your bases! We hackers now!). This list looks for example like this:
STR_ALIEN_ALLOYS: 226
STR_ALIEN_ENTERTAINMENT: 5
STR_KNIFE: 2
STR_YOUR_SOUL: 1
STR_STUFF_YOU_FORGOT_YOU_HAVE: 27
STR_PRAISE_STAR_GODS: 1
STR_ETERNAL_IS_THEIR_RULE: 1
Of course this list may differ, depending on what you have.
5. Time to
hack your save hard! Make a new line somewhere between these lines. Don't damage anything that is in there, just place your cursor at the end of any of these lines and press Enter, okay?
6. We're deep hacking by now. Listen carefully: this is the moment where you need to do some manual stunts. Sounds frightening, I know, but relax. When you are ready, press Space bar 6 times. Not 5, and not 7, but 6, and 6 is the number. Got it?
And God forbid if you use Tab instead of proper spaces - then you're toast, man. Gone forever to the land of script kiddies and failed hackers. So don't do it, bro.
7. All right, time to do what we're here for - add the Tiny Drill to your vaults! Stay where you are, focus on your cursor (which should be right after six Space characters), and type this:
STR_TINY_DRILL: 1
8. Check your status. This is what you should be seeing, more or less:
items:
STR_ALIEN_ALLOYS: 226
STR_TINY_DRILL: 1
STR_ALIEN_ENTERTAINMENT: 5
etc.
(As mentioned before, your items may vary.)
Make sure you have the right amount of space characters, so all your items in this base are lined up together nicely. Yes, it's that important.
8. All clear? Good! Save your file, close the program.
9. Start the game, load your save, check your bases - one should have the drill in stores.
10. PROFIT!!!
Note: yes, you can add other items using this method.
I take no responsibility for anything that might happen. Honestly, bad idea.
If you have further questions, go ahead and ask.