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

  • Published on: 28 June 2020
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    ⇊ Links to buy the winning weedeater line ⇊


    What’s it called? Weed Eater, String Trimmer, Weed Wacker, Whipper Snipper?
    Google Trends map here:

    (When people purchase from these links it will support Smarter Every Day.)

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    THE WINNING SHAPES (As a result of this EXTREMELY limited data set)
    Oregon “Gator Line” (Called “sharp square” in the video)
    288 ft ~ $15: https://amzn.to/2CFXewP
    895 ft ~ $30: https://amzn.to/2ZlvTHU

    Star shaped line
    Cyclone Brand
    140 ft ~ $15 https://amzn.to/2AeCmfq
    855 ft ~ $50 https://amzn.to/387oPCV

    (I couldn’t find Shakespeare for a good price on Amazon but here is the style I tested)
    125 ft ~ https://amzn.to/2ZnBRbA

    Other stuff:
    ❓Mystery Item (just for fun): https://amzn.to/38aNmXv

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    📷Camera I use : https://amzn.to/2VSiruw
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    Project Farm Tested Durability: https://www.youtube.com/watch?v=HVJz7Gqn_SY
    He tested other considerations here: https://www.youtube.com/watch?v=89BkJF0kVyc

    I thought this was a well written break-down of different shapes: https://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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  • Runtime : 16:54
  • Smarter Every Day Science Physics Destin Sandlin Education Math Smarter Every Day experiment nature demonstration slow motion slow motion education math science science education what is science Physics of projects experiments science projects weed eater weed wacker weed whipper strimmer whipper snipper weed eater line test Stihl husqvarna ryobi milwalkee dewalt craftsman oregon string trimmer line yard work lawn mower lawn grass lawncare lawn care


  • SmarterEveryDay
    SmarterEveryDay   1 weeks ago

    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

  • J. Williams
    J. Williams   38 minuts ago

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

  • PNW RC
    PNW RC   1 hours ago

    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.

  • The crap adventures of Che Simons

    Whipper snipper in Australia mateI 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.

  • Redakes
    Redakes   4 hours ago

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

  • Ask to seduce Miss
    Ask to seduce Miss   4 hours ago

    "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"

  • Jarrett L
    Jarrett L   7 hours ago

    I use star i think or its a plus

  • TheREALHelly
    TheREALHelly   8 hours ago

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

  • Der Kommentarschreiber360

    I think it would be interesting to see what it looks like when somebody pops a lens out of their eje in slowmo

  • Jynxer JOHNSTON
    Jynxer JOHNSTON   9 hours ago

    I ran a stihl 450 fs for 3 years 10 hours a day. I have used every kind of blade from a the star to a skill saw blade to cut down 8 inch tree trunks. We would use string line. it really depends on the shape of the line and the density of the brush you would cut to go with what shape of line we would use.. At the end of the is also traveling slower then the inner part of the line. The star moves air evenly and cuts better because the speed at the end of the line is distributes the power from the center out is distributed quicker and more evenly.

  • Dudu
    Dudu   10 hours ago

    In Quebec some call it a ''fouet a gaz'', which literally translates to gas-powered whip

  • Pekka Puupää
    Pekka Puupää   10 hours ago

    Buy oregon's unique saw side line....It is good. 😉

  • Karl the Pagan
    Karl the Pagan   10 hours ago

    7:05 turbulent flow is the best!Just trying to stir up your beef with Derek a little more. ;)

  • Pavel Rak
    Pavel Rak   10 hours ago

    We call it in Czech "křovinořez" 😁 most important for me is durability, not the shape 👍 Exchange in half of work sucks 😁

  • Trevor Hewitt
    Trevor Hewitt   11 hours ago

    I just learned from a reddit post that lawn mowers actually create lift which pulls grass blades upright so they can be cut. Do you think this is another factor to consider in weed whacker lines?

  • Michael Russell
    Michael Russell   11 hours ago

    In Australia its called a whipper snipper or Whippa Snippa....strimmer is never ever used in Australia.

  • Ian Manners
    Ian Manners   11 hours ago

    Things that cut get dull, things that smash are already dull. Smashing/tearing the grass is the answer imo.

  • Mike V
    Mike V   13 hours ago

    Weed Whacker Army here; recruiting members.

  • Adam Pike Collegeman
    Adam Pike Collegeman   14 hours ago

    get a digital tachometer used to measure r/c airplane propeller rpm, then test how fast each type of string is spinning at the cutting area to see if that is different and or a performance factor

  • Morris Minor
    Morris Minor   15 hours ago

    There's an extra factor that you haven't considered here. I use Oregon Starline and have noticed that it doesn't retain its shape and then break - in use the 'points' wear down until you are left with a thin cross-section at the very end of the line before it eventually breaks, so it is really acting as a combination of thin roundline and thicker starline. Here you are 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, Oregon Starline has five points and the one you have here has seven. I would expect that too many points makes the line start to act more like it is a round line, ie the spaces are as important as the points

  • Martin Johnson
    Martin Johnson   16 hours ago

    if you had a 2mm circle, and 2mm star line, would the star not go blunt and turn into a circle, with a smaller circumference than 2mm, before it breaks? (same with all shapes). We wont see the line going blunt while only cutting 3 blades of grass, I feel like circle line must be the way to go, when cutting on a larger scale due to it holding it's shape for longer.

  • toomdog
    toomdog   17 hours ago

    You know what I saw? They all went through the grass. My takeaway is to buy the one that breaks the least (most durability per dollar). Kind of disappointed you didn't address that too, Destin

  • Dohan R
    Dohan R   17 hours ago

    Most call it a "weed eater" in South Africa as well.

  • Sí Mon
    Sí Mon   18 hours ago

    I’ve been all over the us and I don’t know anyone who doesn’t call it a weed whacker.

  • Scott Gartner
    Scott Gartner   19 hours ago

    Please publish which line was the quietest. Frankly, they all cut the grass, so I would think noise level would be a very important variable.

  • XxAlphaBunnyXx -
    XxAlphaBunnyXx -   20 hours ago

    It’s 2 in the morning and I’m laying here watching a man cut grass in slow mo. What has my life come to 🤷🏼‍♂️

  • S Gill
    S Gill   21 hours ago

    In Ontario Canada we call it a weed wacker. Never heard the other terms before today.

  • Matt R
    Matt R   21 hours ago

    in Oz we kinda call them whipper snippers haha

  • Shadowidk
    Shadowidk   22 hours ago

    I’m in Texas and call it weed wacker

  • Edward's Sisters'Hands
    Edward's Sisters'Hands   22 hours ago

    Choose express VPN so your ISP and communist government will never know which trimmer line you prefer!!!