Which Shape CUTS BEST? (Weed Eater Line at 100,000 Frames Per Second) - Smarter Every Day 238

  • Am Vor 12 Tage

    SmarterEveryDaySmarterEveryDay

    Dauer: 16:54

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    ⇊ Links to buy the winning weedeater line ⇊
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    GET SMARTER SECTION
    What’s it called? Weed Eater, String Trimmer, Weed Wacker, Whipper Snipper?
    Google Trends map here:
    trends.google.com/trends/explore?geo=US&q=weed%20eater,weed%20wacker,string%20trimmer,weedeater
    AFFILIATE LINKS:
    (When people purchase from these links it will support Smarter Every Day.)
    Check out ExpressVPN Here: expressvpn.com/smarter
    THE WINNING SHAPES (As a result of this EXTREMELY limited data set)
    Oregon “Gator Line” (Called “sharp square” in the video)
    288 ft ~ $15: amzn.to/2CFXewP
    895 ft ~ $30: amzn.to/2ZlvTHU
    Star shaped line
    Cyclone Brand
    140 ft ~ $15 amzn.to/2AeCmfq
    855 ft ~ $50 amzn.to/387oPCV
    (I couldn’t find Shakespeare for a good price on Amazon but here is the style I tested)
    125 ft ~ amzn.to/2ZnBRbA
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    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    OTHER TESTING
    Project Farm Tested Durability: de-film.com/v-video-HVJz7Gqn_SY.html
    He tested other considerations here: de-film.com/v-video-89BkJF0kVyc.html
    I thought this was a well written break-down of different shapes: www.saraheberle.com/understanding-the-various-shapes-of-trimmer-line/
    It’s interesting that so many different companies have their own proprietary shape etc, but I can’t find any scientific research to back any of it up. Fascinating!
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    Destin

SmarterEveryDay
SmarterEveryDay

Robert subscribed then hit the bell. Be more like Robert. In all seriousness I was impressed by how quickly he came up with a well thought out, nuanced hypothesis without even a moment’s notice. Huge thanks to Robert. Also, a huge thanks to everyone who supports Smarter Every Day on Patreon at https://www.patreon.com/smartereveryday Thank you! Destin

Vor 12 Tage
Muhammed Zulfikhar
Muhammed Zulfikhar

Turbulent flow is better than laminar flow

Vor 2 Stunden
Muhammed Zulfikhar
Muhammed Zulfikhar

Turbulent flow is better than laminar flow

Vor 2 Stunden
Muhammed Zulfikhar
Muhammed Zulfikhar

Turbulent flow is better than laminar flow

Vor 2 Stunden
Muhammed Zulfikhar
Muhammed Zulfikhar

Turbulent flow is better than laminar flow

Vor 2 Stunden
Muhammed Zulfikhar
Muhammed Zulfikhar

Turbulent flow is better than laminar flow

Vor 2 Stunden
Paragliding Guys
Paragliding Guys

Do you self-identify as a Dull Square or a Sharp Sharp Square?

Vor Stunde
lol_nl
lol_nl

Why did the chicken cross the road. Weed eater

Vor Stunde
DieselBoulder
DieselBoulder

One thought on the goal of this research. The initial assumption/goal for this was you were looking for the type of line that would do the best job of cutting the grass. However, there is a little more to it. When you cut the grass given that some tear, some delaminate and some cut the grass how it re-grows afterward could be/should be a factor as well no? For example, while one line might cut the cleanest or easiest how does the grass recover from that cut? You may end up with a faster cut lawn, however, you may end up with more brown-headed blades of grass afterward. Taking this a step forward finding the pareto-optimal solution to fast cut and aesthetic grass sounds like a truly worth ig-nobel level of research

Vor 2 Stunden
steeltoecapthongs
steeltoecapthongs

In Australia we call it a whipper snipper

Vor 6 Stunden
Tapper21
Tapper21

I tried just about every different kind of line I could find (various prices, shapes, etc) over the years until I started using some pink star shaped stuff with about 6-7 sides that twist along the line, its VERY sharp on all the corners and very rigid to the point it cuts my hands up when i restring the head, the "flutes" dig in like a drill bit as the line tries to twist while I wrap it around, but the swearing and the stinging cuts are worth it for how much longer it lasts compared to everything else I have used, it seems to cut better or at least just as good, my primary concern is how strong it is because I hate bumping the head to feed more line constantly and then restringing it. I lost the packaging a long time ago and it has lasted me so many years that I am just hoping I will be able to find the same stuff again when I run out. As you demonstrated the difference in noise level I also realised myself that this line is considerably more pleasant to use than regular round line for that reason also. My ONLY complaint with this particular line is that when pieces do snap off (bump the head and the excess gets cut off) and those pieces hit my legs...... they cut flesh VERY well, adding to my pain I started using an 18 volt brushless trimmer instead of the Honda and the slower speed and increased torque seems to only make the pieces aim for my legs better :P big issue in summer because it is TOO HOT to wear long pants but in winter its not so bad :D

Vor 8 Stunden
Christopher Collins
Christopher Collins

6lb nylon fishing line

Vor 9 Stunden
kibukun
kibukun

I always heard weed whacker when I grew up in Seattle, and then I heard everybody call it a weed eater in San Diego.

Vor 9 Stunden
AlanXD
AlanXD

It’s a strummer boi

Vor 14 Stunden
LinearAnalysis
LinearAnalysis

It seems like the star may have more of the right turbulating pitch to create more of "golf ball" dimple effect (if the dimples are too deep or large you lose the aerodynamic advantages) as aerodynamic turbulators versus the coarse pitch of the square which I think might trip the turbulence into less stable oscillating state. I bet if you could do an even more high speed camera and at different angles you could see the way the air it is passing though causes vibration in the filament. It'd be interesting to see a study that gets more into the specific velocity of impact and the stiffness of each line with one blade of grass versus an increasing density of blades it must go through to determine specific cutting efficiency per mass of material removed in the cut and for different DOC for a static amount of KW/HP in. I'm going to stop before my wife wants to strangle me for nerding out on YouTube at midnight... Cant help it. (Kietty, if you're reading this I'm sorry but not sorry... love you babe ;) ) LMK what you think!

Vor 15 Stunden
Matthew Tanner
Matthew Tanner

you forgot about grass cell wall integrity, not that you can account for that...

Vor 17 Stunden
Matthew Tanner
Matthew Tanner

it's a weed-eater. who laughed. ur dumb.

Vor 17 Stunden
Gladwin Kurian
Gladwin Kurian

I challenge you to make a video on differences in 'audiobook' vs 'reading hardcopy of the book' :-)

Vor 18 Stunden
Ray
Ray

meat beater.

Vor 22 Stunden
Kriste Isopahkala
Kriste Isopahkala

I love Robert. What a wonderful dude.

Vor 23 Stunden
Kriste Isopahkala
Kriste Isopahkala

Are the sounds real in the slow motion? They can't be, right?

Vor 23 Stunden
Kriste Isopahkala
Kriste Isopahkala

This is probably the coolest slow mo I've seen.

Vor 23 Stunden
Ken Hagen
Ken Hagen

Robert said he wouldn't call himself an expert, but then provided multiple valuable pieces of input immediately on a project he just walked in on. 😂

Vor 23 Stunden
Michael Mundlin
Michael Mundlin

How short can the wavelength of the electromagnetic spectrum be? Is there a limit on how short the wavelength can be?

Vor 23 Stunden
torrace12
torrace12

The weed eater guy is such a cool archetype of an american worker lots of work pride and personality

Vor Tag
torrace12
torrace12

the line the professional used was mounted on a more powerful weed eater so it would have straightened out completely?

Vor Tag
83N74M1N
83N74M1N

professional sharp-sharp-square line needs to be soaked in water for a few days before using to get more flexibility and higher durability

Vor Tag
Super knullisch
Super knullisch

Strimmer?? What!?! No.. it's Trimmer! in Sweden at least!😁

Vor Tag
Jake Santangelo
Jake Santangelo

Hey destin I think you would make a cool video about top fuel dragsters

Vor Tag
TheFaceofDood
TheFaceofDood

Robert is gold! I would love to see a follow up test using all of the non-string attachments that are always being advertised.

Vor Tag
we can game
we can game

w̴̡̡̦͙͔̗͈̮̥͊́͐̉̚e̷̙̅e̶͉͈͋d̶̡͇̫̩͋͂̇̂͊́̅̀͜ ̵͙̤̭̝͉̻̝̠̖̓̋͊͜e̵̦̤̳̼͉̳͕̙͖̱̓͊̏ą̵̧̝̳̚͝͠t̶̠̫͍̳̓̏̿́͛̏̒̌͗͘e̴̳̓̒̀̍r̷͉̼̋̔͑̓̽̀

Vor Tag
Spooderman
Spooderman

Whipper snipper gang rise up from down under.

Vor Tag
Oli Moore
Oli Moore

Here in Australia we call weed eaters Whippa Snippers

Vor Tag
stocchinet
stocchinet

Why do the chicken cross the road?

Vor Tag
Alyssa Andersen
Alyssa Andersen

Wipper snipper in Australia

Vor Tag
Honey BBQ Sauce
Honey BBQ Sauce

Most people where I live here in ohio call it a weed whacker I dont think that data is very accurate. like how could it be anyway.

Vor Tag
Snowboarding Beast 07
Snowboarding Beast 07

If you think about it you can never actually touch anything because atoms cannot touch each other so if you give someone a high-five you don’t actually touch there hand

Vor Tag
Γιάννης Μεϊμάρης
Γιάννης Μεϊμάρης

Just a comment about the twists on the lines. A tubular object when subjected to high air speed tends to wobble a lot. The twist breaks up the air turbulence thus making the object much more stable. You get to see that applied a lot on bridge cables.

Vor Tag
Theldras Pneumonoultramicroscopicsilicovolcanoconiosis
Theldras Pneumonoultramicroscopicsilicovolcanoconiosis

a string trimmer is a string trimmer regardless of what the majority want to call them. if the majority was to call a tornado a spiny boi, would that make "spiny boi" the correct term? i think not! and with how fast it spins the shape don't really matter all that much.

Vor Tag
imapieface
imapieface

Didn’t ProjectFarm already do something like this (just without the slo-mo, but more scientifically rigorous)? Ah, yeah, I see his link in the description 😂

Vor Tag
Ivy Kueffner
Ivy Kueffner

It’s so different hearing the words "weed eater". Never in my life have I heard that term until I started watching your videos. I call them "weed whackers"

Vor Tag
imapieface
imapieface

I’m from PA. PEOPLE DON’T SAY WEED WACKER EVERYWHERE!?

Vor Tag
Julius Zavatskis
Julius Zavatskis

Star shape uses "tennis ball" air turbulence, that makes air to move away from cutting edge in result "sucking" grass to the cutting edge.

Vor Tag
luis martinez
luis martinez

Im from florida i call it a weed whacker

Vor Tag
Starlord1103
Starlord1103

In German it's called Rasentrimmer. I like my language somehow

Vor Tag
Davo
Davo

Most Australians say whippa snippa

Vor Tag
Steve P
Steve P

WHIPPER SNIPPER 🇦🇺

Vor Tag
7Firefly7
7Firefly7

Just got hired doing weed whacking for my city, this is wonderful. For the record, we use sharp sharp square

Vor Tag
2K_YT
2K_YT

I call it a weed wacker and a weed eater. Same thing it just kills weeds. Why cant it just be called a weed? Oh wait.....

Vor Tag
MrKoubak
MrKoubak

first worl problems

Vor 2 Tage
panda Wells
panda Wells

Weed whacker is just so much more fun to say

Vor 2 Tage
The EfX
The EfX

Why not the grass cutter??

Vor 2 Tage
MrGreenAKAguci00
MrGreenAKAguci00

Robert is awesome!

Vor 2 Tage
Kookee Penguins
Kookee Penguins

Hypothesis: The ad in this video is NordVPN

Vor 2 Tage
Ken's Channel
Ken's Channel

Waiting for Robert to show up to help Dustin at the next Rocket facility tour to describe friction welding fuel tanks or optimal shapes for nose cones.

Vor 2 Tage
nanophreak
nanophreak

I think the star shaped line getting cleaner cuts might just come down to the fact that it has more 'edges' so it has a higher chance of contacting the grass with a sharp shear angle.

Vor 2 Tage
KiwiPokerPlayer
KiwiPokerPlayer

New Zealand checking in, confirming "weed eater" is correct but they are called "line trimmers" in hardware stores.

Vor 2 Tage
dewcodered88
dewcodered88

Yeah its a weedeater... Everyone else is wrong... lol

Vor 2 Tage
Andy T
Andy T

I’ve been skipping this video forever in my feed because I thought those were gummy candies. And I was like why do I care about gummy candies being hit by a weed eater

Vor 2 Tage
Merecir
Merecir

Robert should do hours long weed eater videos, he could get millions of subscribers from that I think.

Vor 2 Tage
B4D-W0LF
B4D-W0LF

That's rad :D

Vor 2 Tage
Дмитрий Хабаров
Дмитрий Хабаров

what i think about this experiment is that americans are f***en BORED in motha Russia, we call this thing a "trimmer". Because it doesn't eat grass or weed or bush - it doesn't eat at all. I-i-i-i-t tri-i-i-ims.....

Vor 2 Tage
mista bshe
mista bshe

australia says whipper snipper budy

Vor 2 Tage
Kenneth Clark
Kenneth Clark

Weed Whacker

Vor 2 Tage
Axela MPS
Axela MPS

In the UK, it's very much a strimmer. "Weed eater" sounds simplistic and dumbed down to me.

Vor 2 Tage
El Caras
El Caras

Hi Aron, I like your videos and the way you explain the operation of physical phenomena, maybe you can help me with something that happened to me yesterday, one of our glasses (I don't know if it was glass or crystal) exploded spontaneously For no apparent reason, now my mom and I would like to know how this happened. I would very much like you to answer my question. Regards

Vor 2 Tage
Garfish
Garfish

"he suggested that we weigh each line in a certain length and calculate it's linear density" He did what? Clearly got Audible in his ears for those 10hrs of weed eating he does a day! Cause I sure didn't think of that!

Vor 2 Tage
Sociopath Mercenary
Sociopath Mercenary

I'd like to see how the lines cut blades of grass that aren't tensioned. The bending of the grass against the line could affect the way it cuts.

Vor 2 Tage
Sociopath Mercenary
Sociopath Mercenary

It's Project Farm with SCIENCE and slow motion! Woot!

Vor 2 Tage
LLTheGuy
LLTheGuy

I live in Florida, and I've never heard the term weed eater even once! I've always known it as weed whacker

Vor 2 Tage
hypertion
hypertion

One thing you didnt test was durability of each line! High speed tests to see which has a higher vs lower point of failure.

Vor 2 Tage
Chris Guglielmoni
Chris Guglielmoni

Either weed eater or weed whacker, but mostly weed eater. Here in California

Vor 2 Tage
J. Williams
J. Williams

I don't know what others call them, but I call them a lot of work for someone as lazy as I am!

Vor 2 Tage
PNW RC
PNW RC

Neat video! After seeing the weight sample, I though for sure the heavier lien would have did the better job of cutting.........With that said, the high speed DON'T lie.

Vor 2 Tage
The crap adventures of Che Simons
The crap adventures of Che Simons

Whipper snipper in Australia mate I don't think it's about clean cuts so much as how long your cord lasts in area of grass cut, ie cost per meter squared in both dollars and minutes.

Vor 2 Tage
Donovan Halstead
Donovan Halstead

Robert's hat is awesome. What is it?!

Vor 2 Tage
Alex Kairis
Alex Kairis

My NJ dialect hurts me so much now.

Vor 2 Tage
Nicolas Quijano
Nicolas Quijano

weed eater

Vor 2 Tage
Redakes
Redakes

Being from Michigan I can personally agree that we call it Weed Whacker and weed whip

Vor 2 Tage
Ask to seduce Miss
Ask to seduce Miss

"What is the solution to the equation 2 + 2?" "I dunno. What does 2 + 2 equal?" robotic noises "W E E D E A T E R"

Vor 2 Tage
Ask to seduce Miss
Ask to seduce Miss

just focusing on the 'virgin' shape of the line and the real test is to see how it cuts as it wears down too - this would add complications to your experiments though. Also, Oreg

Vor 2 Tage
Unfiltered Reality
Unfiltered Reality

You're getting into Project Farm territory here, careful! ^^

Vor 2 Tage
C4PT41N P5YCH0
C4PT41N P5YCH0

6:58 did- did you just say interestring??

Vor 3 Tage
Joshua Charlery
Joshua Charlery

Weed Wacker**

Vor 3 Tage
Jarrett L
Jarrett L

I use star i think or its a plus

Vor 3 Tage
TheREALHelly
TheREALHelly

weed whacker or whipper snipper.... this is coming from a young whipper snapper

Vor 3 Tage

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