I think you underestimate the pain. I've been cutting myself for years, and even I can barely get through the physical pain i give myself sometimes. Though I am a massive pussy, so that explains it partly. Regardless of all that though, this site:
http://lostallhope.com/suicide-methods/statistics-most-lethal-methods gives us the information that slitting your wrists is extremely ineffective, at a just 6% success rate. Furthermore, the site states that it takes nearly two hours (on average) to bleed out. During those two hours you're in constant agony, as the site also gives these two methods a relatively high agony score.
I'm not trying to persuade you to live, I'm trying to tell you that you're going to cause unnesecary and unsuccessfull harm to yourself.
Hmm, strange. A failed attempt a couple of years ago made it clear that there really was pain, but apparently I didn't get to the veins that time. I certainly understand that you do not want to discourage, but I have 1 attempt out of 30 (minimum) in a successful hang. those. if I hang, I will similarly experience pain, it is not critical.
(I am accustomed to pain in general, 3+ years almost constant toothache, the treatment did not really help.)
Of course, you are not trying to dissuade, but what other options do I have? 8-9 floor is shallow, too ... try to drown in a river or the sea? Well, similarly, I can not cause hyperventilation. pills? did not work. sodium nitrite requires money, huh.
I would not advise you to do it with a knife! You have to know your biology/anatomy pretty well. Also depending on your fat% finding the artery that runs through your wrist will be a pain in the ass. Plus, you have to cut the artery lengthwise and then hold it into water so that no clotting can take place. And to top this off, now you need to do the same thing to your other wrist with one fucked up hand. You will probably cut tendons involuntarily and then lose dexterity.
So you say you have no bath, that is a big problem - I would not do it then.
If you really want to bleed out then I would advise one of the following:
1) Get a bath (a big plastic container with at least ~150 litres) -> Drink alcohol + take aspirin -> Cut your femoral arteries (within upper thighs) -> Bleed out it 30 - 60 seconds -> Death
2) Get a blood draining kit (online purchasable), preferably those butterfly needle kits -> Drink alcohol + take aspirin -> Go to an isolated place -> Drain your blood until loss of conscience -> Death
I would not advise you to do it, there are better methods. But if you are really determined I would say go for the blood draining kit!
hmm instead of a bath there will be a bucket of water (hot) .. pain, heh .. no matter.
about anatomy, I think it is easily reparable. I can see the blue veins in my arms, they are thin, without excess weight ..
aspirin? there is our analogue, citramon (also reduces blood coagulation)