Id love to see the math on the amount of iron in a person's blood, because I find it HIGHLY questionable that there's enough iron in only 300 people to make a full iron sword. I'm too lazy to do it myself though.

These are the required elements for making steel:

• Iron
• Carbon
• Manganese
• Chromium
• Phosphorus
• Sulphur
• Nickel
• Molybdenum
• Titanium
• Copper
• Boron

Source: https://www.cliftonsteel.com/education/11elementsfoundinsteel

So, iron is only step 1. Humans are carbon based lifeforms, so I'm guessing that carbon is also sorted, that's step 2.

There's plenty of other elements in the human body, like phosphorus and sulphur, but I'm guessing that it's going to take more than 300 adults.

Source: https://sciencenotes.org/elements-in-the-human-body-and-what-they-do/

Source: https://sciencenotes.org/wp-content/uploads/2019/02/PeriodicTableHumanBody.png

Listen. If they used surplus blood to do this (blood that was expired) and then held a raffle at the end of each year where all blood donors were entered to win a knife or sword made from the expired human blood iron, I bet they'd see blood donations skyrocket.

ok, but humans also regenerate blood, very slowly but it does happen. So theoretically, you could contract your family members to draw blood to be used to make a longsword out of your family's bloodline. And have it become an heirloom.

You could also get a big sword-shaped ice cube mold, a chest freezer and probably not even a whole enemy.

You would have to do battle in freezing climates too though in order for it to remain physically effective

Though I imagine the psychological effectiveness might persist a bit longer

Listen there's definitely enough carbon in the body to boost that into a steel sword.

If we can make diamonds out of corpses, we can make steel.

I was curious how long it would take to make a sword out of your own blood. If my math was correct(it probably isn't lol) the human body contains around 4.7 to 5.5 liters. And then you can apparently donate like 470 millileters every 8 weeks.

So take 4.7(assuming the smallest people) X 300 = 1410 L total blood

1410(total needed) / 0.47(donation amount) = 3000 donations X 8 weeks = 24,000 / 52 = 461.54 years

So about 3150 pints of blood (10.5 being average for an adult).

Sounds doable XD

Edit: New ethical dilemma just dropped - kill 300 to forge the sword, or deny 3150 people blood in an emergency to forge the sword...

You know there’s a writer reading this meme somewhere: here; where ever it came from; where ever it will be reposted; and adding it to the story they are working on. Wonder where we’ll come across it first?

Glory.

You could even use the carbon from their flesh to make the steel!