Hapa on youtube followed a recently published paper and made bulletproof wood.
Implications irl and for time travel larping in case you wanna win WWI/WWII save the Roman Empire?
>technology required?
Could be done in ancient times.
New Tech: Bulletproof Wood
3 layers of compressed wood (about 20% of the original size) stopped a 9mm round from a rifle (I assume he didn't use a pistol because he's Canadian or something).
According to the paper it's stronger than steel by weight.
Stronger how? Tensile, compressive, torsion….
Anon, it's compressed wood.
I'm fairly certain it'll be the tough but brittle kind. The tests had parts chipped off instead of the whole thing breaking which probably helps with (a limited amount) of impacts.
Yield strength.
5 on topic posts
The rest is /misc/ shit
Nuke this site
You always can go back tourist
I have been here longer than you AND i am more racist
Stop shitting up every thread with your shit
Okay pal, don't let the door hit you on the way out.
It's been like this since the local zigger shill group moved in a month back its purely aids.
They literally seethe about anything western and devolve it into /misc/ garbage, the last three days have been unusable so I started building a filter, it's working pretty good.
Make that six.
Aren't a lot of woods already stronger than steel by weight? I thought the sticking points were volume, flexibility, and overall resistance to stuff like pests and rot.
>Could be done in ancient times.
Lol, yeah, they had heated high precision hydraulic presses back then.
Wood? I don't think so. But there are tons of plastics that are.
Please scroll down this wikipedia article and educate yourself.
Balsa for example is twice as strong as titanium (per weight)
https://en.m.wikipedia.org/wiki/Specific_strength
NTA (I am not retarded)
But the neat thing about compressed wood isn't just that it's stronger but also... compressed.
Which might help with wood being too thick for most stuff.
Looking at this and makes me wonder if zylon is something you could 3d print with
>Lol, yeah, they had heated high precision hydraulic presses back then.
No hydraulic press needed.
>heated high precision
You need 100 degrees, so exactly the temperature of boiling water. That's quite easy to achieve.
Why don't you just shut your stupid fucking whore mouth before spouting off you uninformed nagger?
>No hydraulic press needed
How are you getting 700psi otherwise
In the most primitive way?
A pulley system that barely lifts the weight above what you squish, which you then let down in a controlled manner.
>but that's a lot of weight!
Yes, but you only have to prepare it once and slave labor was cheap in ancient times.
Both Greeks and Romans would probably come up with much better systems considering the stuff they did for their mines.
Did you watch the video in question? A very high degree of precision was required. The first several pieces he made didn't work worth a shit, until he had a custom machined die made which was perfectly flat and constrained the wood on four sides while pressing.
>Did you watch the video in question? A very high degree of precision was required.
No it wasn't, he just used a shitty machine from alibaba with a loose top-part that wobbled you fucktard.
>The first several pieces he made didn't work worth a shit, until he had a custom machined die made which was perfectly flat and constrained the wood on four sides while pressing.
1. Perfect flatness isn't necessary.
2. Metalworking existed in antiquity.
>1. Perfect flatness isn't necessary
It is or it will just squish out to one side and you"ll get a pancake
You're confused, anon.
Aside from the fact that even Romans and Greeks could get shit flat, which makes your entire point meaningless, the issue he had was due to uneven distribution of force from the top.
>the issue he had was due to uneven distribution of force from the top.
And you think a rock stack is going to work better?
Depending on how you do it that's pretty irrelevant, anon.
The issue with the chinese press was that the top was wobbly and he didn't center the first attempt.
Make the top rigid and the problem's solved.
>As he pointed out, the study cited white pine as ideal.
No he didn't.
Okay he said it had good results, not the best, that's my bad. However, if you actually look at the study, pine achieves 92% of the strength of oak, which was the strongest. So 1) the original wood doesn't matter nearly as much to final strength as it did before treatment and 2) you could not expect vastly better results by switching
>However, if you actually look at the study, pine achieves 92% of the strength of oak, which was the strongest. So 1) the original wood doesn't matter nearly as much to final strength as it did before treatment and 2) you could not expect vastly better results by switching
1) You'd need to try other types of wood to find the best one and figure out what makes one type superior to others in the first place, there are much harder woods than oak for example.
2) See 1).
>Shields typically weren't made from compressed wood
That's not what anon said, nobody really used compressed wood much in history and nobody has ever used this extreme kind.
Though I remember Romans using some kind of primitive plywood, which actually qualifies.
>hypothetical hypothetical hypothetical
You're really obsessed with winning fake arguments. I said what I said based on available information. Considering that most of the strength is independent of the wood stock (oak being nearly twice as strong as pine before treatment but the gap closing to 8% after treatment), there's no reason to believe that it would suddenly become an order of magnitude better with better wood. Can I prove that without testing it, no. But unless you have a good reason to say it, which you don't, you're just coming at me with the wood of the gaps theory.
That said, I have no reason to believe this process can't be improved and I would be interested in those results. I can only judge it by things that actually exist, however.
hypothetical hypothetical
>You're really obsessed with winning fake arguments.
What the fuck are you talking about?
You made assumptions, not me,I said we don't know yet.
Are you retarded?
>assumptions
That's what the data suggests.
Nothing in the data supports your point.
You had the problem with what I said about the technology as it actually exists and started spouting hypotheticals, not the other way around.
>suggests
Assumptions. Just admit it you stubborn cunt.
We don't even know how much initial hardness contributes if soft pine can get 92% of the strength of oak. Chances are there's a lot more to work on.
>Nothing in the data supports your point.
Which point? Are you drunk?
>You had the problem with what I said about the technology as it actually exists and started spouting hypotheticals, not the other way around.
ESL?
>can't logically follow something as basic as "every type of wood treated in this way performed similarly so it's natural to conclude that this is a pattern and not a coincidence"
>immediately mixes up strength and hardness
>complains about ESL because he can't follow a sentence
Arab?
But none of that is true, anon.
OK.
A chinese press is far more precise than anything even victorians had
>A chinese press is far more precise than anything even victorians had
Precise in what way that matters here?
You brainlet chink apologists keep using that word.
The "wobbling" is a feature
Nile is just an idiot who always biys the wrong tools
yawn.
Can’t you just dip the wood(in a die container) in the ocean? A few hundred meters deep and you get the required pressure.
How do you get it at 100C down there?
Again: did you even watch the video in question or are you a virgin trying to discuss sex?
Needs to be heated at the same time
What are hydrothermal vents?
Dip it in a volcano then, duh.
I think his main issue was not fully soaking the wood, which you can't really do, you only get about a quarter inch penetration like that. He should have been compressing half inch pieces of wood using that process then laminated the paper thin results.
>I think his main issue was not fully soaking the wood, which you can't really do, you only get about a quarter inch penetration like that.
That actually seems like a huge issue which could lead to massive improvement and it's really weird that he didn't pick up on it at all.
he noticed it, decided it would be hard to address so it must not be real, and kept going.
honestly more what i would expect from an engineer than a soientist
Not engineer, more a researcher behavior :
one parameter at a time so i continue the experiment like that even if i notice another potential parameter to improve
I continue until i get to proove the possibility i’m trying to show : a bullet stoped by compressed wood plank. Improvments will come after, if i ever bother.
Also he’s a chemist. That bearly qualifies as a scientist.
He also should have tried compressing an untreated piece of wood to see what the result would be.
By putting weight on top?
Uhh do you know how much weight you would need anon?
NTA but what are you gonna use the wood for?
Armor? One solid piece?
First of all, yes. You could do it in separated loads to make it easier. Just build a tower around the press. Stuff like that isn't unheard of, see how the ancients used stuff like water-driven hammers.
Second of all, you underestimate the white man.
Repent.
>when your brain is too evolved to think about the obvious monkey solution
In a way, you should be both proud and ashamed of yourself, anon.
>just put several thousand pounds of rocks on a tiny bit of wood
Good luck with that
>enjoy splinters in your gut
>not just putting a thin steel sheet behind it to spread out the impact of the deforming wood, make the armor much stronger and protect yourself
Also I'd rather have wood than kevlar in my gut tbh
Why? So you can grow into a tree? You're out of your fucking mind bro. Seriously, seek help.
Wood is easier to remove and easier for the body to handle if it isn't removed, anon.
Did you eat a lot of cotton candy from your roof as a child, anon?
I guess American humor doesn't land with foreigners. Sorry for alarming you.
>American humor
>being retarded
Zoomers need to be culled ASAP.
>taking it literally when someone asks if you want to be a tree
You lost this one
>not wanting to be tree-beard
No anon, you lost at life.
>thin sheet steel
does nothing
>kevlar thread ingress is worse than splinter shrapnel
that's an interesting opinion
>thin sheet steel
>does nothing
Megatard. Think about what it does after looking at the exit holes in the wood again.
Wooden armor was a well known factor in the ancient world, and it's neat to see people testing shit like this. Compressed wood would obviously be strong, we've seen it used before fiberglass in composite bows and other things like skis.
... you know shields were made out of wood, right?
Shields typically weren't made from compressed wood, and I'm talking specifically about wooden armor, not shields. Shields just as often were made from wicker, stretched hide/leather, Metals like bronze around a wood core, or woven plants and reeds then covered with hide and leather as they were from wood. Wooden armor though is relatively unusual in the ancient world, but almost certainly was used, especially in the bronze age. Why it hasn't survived for modern archeology to find is probably because it was made from, well, wood, and the urnfield culture likely burnt that armor along with bodies.
What museum is this?
Im a Pacific Northwest anon, it looks to be any one from Vancouver to well.. Vancouver. Lots of native shit in most museums.
>and thats a good thing
>Id rather have my river naggers and tonkalonka road names than real naggers and 35 MLK streets.
Don't worry, you'll have both and a bunch of chinks and indians thanks to trudy.
Northern WA poos are akshulaly racist against chinks and having white friends is a social status. Although there are more and more lower class blacks than ever before. Most blacks coming through my area were coastguard affiliated so way better than your average hoodrat army soldier. The majority seen are arm in arm with local tweaker mutts.
Alright man take it easy.
They must be eliminated, its the only way.
>Northern WA poos are akshulaly racist against chinks and having white friends is a social status.
Anon, they WILL fuck you over.
We're sitting at 4.6% and that's 4.6% too high
I think the fent has decimated their numbers, but that's only like 10%
My basement, right next to the coom chamber.
Gimmie dem fappy native tiddies.
I wana clap dem never took a shower cheeks!
I watched the video when it hit my recommended.
It's not useful as armor, the demonstrated performance could be replicated by kevlar at a fraction of the weight and bulk. However, if you got good at making big batches, it would be a substitute for high strength plastic or composite while looking cooler
>modern wooden frame hypercar
>It's not useful as armor, the demonstrated performance could be replicated by kevlar at a fraction of the weight and bulk
He used cheap wood and naggerrigged it all together.
The trick to making it good would be combining materials, I think a thin sheet of steel in the back would already do quite a lot simply because of the nature of the lines in the wood, every impact moved quite a lot of wood backwards when it penned so the kinetic force spreads out and could be absorbed by steel which wouldn't be confined to the grain.
As he pointed out, the study cited white pine as ideal. It doesn't actually perform better with better wood. There's probably performance left to gain through optimization, but based on what we see there's no reason to entertain it as armor. You can backstop kevlar too.
>Could be done in ancient times
You are going to want at least a iron screw to apply the pressure and make the press plates from, this limits it to the late medieval.
>Could be done in ancient times
did they have 60,000 pound presses that also heated to 100c in ancient times?
Read the thread, silly anon.
I know, which is why I'm wondering what the fuck the anons are talking about here.
It's called your mom haha gottem
It's retarded and literally inferior to mild steel, so it's not going to win WWI/WWII or save the Roman Empire.
Wrong.
Watch the video or read the study before talking shit.
See above.
Behold! I had invented bullet proof wood long before this charlatan.
Yeah, wooden stokades were used for centuries.
Stopping handgun bullets isn't that impressive. An extra thick linothorax would probably do the job too
linothorax is criminally underrated
It’s not about the wood, it’s about how much heavy it is compared to the heavyness of steel plate able to stop 9mm bullet.
Now the bulkiness is also important. And 3 planks seem too much.
But i think there’s a lot of room for improvment, but this guy doesn’t seem to be the best choice for that. He took years to just make this one video, doubtfull he push more. Also he be scientist, he likes theorical and proof of concept. We need engineers.
>bulletproof wood
we know. the USS Constitution wasn't called Old Ironsides for nothing, its oak hull repelled cannonfire
the Japs used portable wooden and straw barricades like pavises to block musket fire
railroad ties are used as backstops all the time
Just market it as renewable environment friendly armor.vg