As you can see, the included extension cord collides with the chosen cpu cooler. The other end of the cable looks like this.
So I need a 1ft c13 to c14 cable with two angled connectors. Not sure if the c14 side should be angled up or right.
Anyone know where I'd buy such a specific cable?
Usually when you need something really specific like that and you're not selling this PC to someone else, it's best to just make your own. Get a c13 or c14 rewireable end, cut up an existing cable, and stick it on there. As long as you do a clean job and don't put the wrong wire on the wrong terminal and it's all secured properly you'll be fine.
If you cinch a small ziptie down really tight on the black insulation right where it tries to exit the end you modified, you can give it some extra strain relief and reduce stress on the terminal screws.
Oh, I hadn't considered that. It's an internal cable (to connect the PSU located at the front to the power input at the back of the case) so I shouldn't need a lot of strain relief. I'll see what I can find for that endeavor.
As long as you're careful when you're stripping the outside protective sheath and don't cut thru the black or white insulation on the internal wires and don't have any stray / frayed conductors sticking out after you screw everything to the terminals it's going to be plenty safe. I usually try to make the first cut above the ground wire because it doesn't matter if I slice into that one on accident. Making AC cords is a lot easier than terminating coax or cat-6, you just have to bear in mind that the consequences for screwing it up can be a lot higher.