Well, it's just mentioned an aweful lot. Each example by itself is nothing, but all of them together...
(Minor spoilers below, so beware.)
Like when you ask Bao-Dur about his arm, and he makes a joke about how it kept dropping his hydrospanner.
Or on Nar Shaddaa, Tien(Is that his name) keeps mentioning a hydrospanner. "Where's my hydrospanner?", "If you use the workbench, make sure you put the hydrospanner back in its proper place", stuff like that.
Or on Dxun, the mandolorian who's repairing things mentions stuff about hydrospanners. Something about how he was "never very good with a hydrospanner", I think. And isn't there an option for you to say something like "I'm very good with a hydrospanner, let me help"?
Isn't there also something about using a hydrospanner to smash motivators on something? Can't quite remember where this occured, though.
Not to mention the whole hydrospanner quest on Dantooine.
And don't forget how when you fail to repair T3 at certain times, you can say something like "Whoops! Must have left my hydrospanner in there!"
And also, when you install the pasifist package in HK-47, he mentions something like "Be careful, I have seen how you use a hydrospanner"
Seems like I'm forgetting some.
Edit: I also forgot, hydospanners are even in some of the cut content. In the HK-Factory quest that was cut, for example. One of the droids there was apparently supposed to help train droids for torture. This particular droid had a few programming issues, it seems, and mentions something about "Do not spare the fusion torch or hydrospanner!" in a deranged voice. Hydrospanners as torture implements... they're everywhere!
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I'm somewhat at a loss at how you've managed to pseudo-perversify those. :ph34r: