Introduction: The EasySling

Picture of The EasySling
A sling to hurl oversize water balloons, waterballs, zucchini your mother grows that you would rather fling than eat, and anything else that will fit in the sling. Can be built in about 10 minutes, and materials can be found around the house.

P.S. Don't forget to rate it if you like it :)


Step 1: Gather Your Materials and Tools!

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1) Old T-shirt
2) rope (about 20 feet)
3) Duct tape
4) ammunition


1) Scissors

Step 2: Measure Yourself

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1) Measure yourself from the floor to shoulder height.
2) Take that number and double it.
3) cut two lengths of rope that are your shoulder height doubled.

Example: I am five feet from the floor to my shoulders, so I will double that. I end up with 10 feet, so I will cut two lengths of rope 10 feet long

Step 3: Cut T-shirt

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cut a rectangular piece of cloth 10 inches by 7 inches from your scrap T-shirt.
(25.4 cm by 17.78 cm)

Step 4: Reinforcements!

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Tape duct tape on all four corner to reinforce the areas where you will be putting your rope through.
(duct tape only needs to be on on side)

Step 5: Make Holes!

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Make Holes in all four corners through the duct tape and cloth.
I just stabbed it with my scissors, but you may want to do this differently.

Step 6: Feed Rope Through

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Flip your cloth over, then feed your rope through one hole and out the other.
(do this on both sides of the cloth)

Step 7: Tie Some Knots

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Even out the ends of your rope and tie a simple overhand knot with the two.
Do this with both ropes.

Step 8: TADA!

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finished with the sling

Step 9: Holding the Sling

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take your dominant hand, and feed one of the knots between your middle and pointer finger. bring the knot over to your pinky and hold the knot loosely there. bring the other knot between your pointer and your thumb, and pinch it there. Now, clasp your hand into a fist.

Step 10: Sling Stuff!

Picture of Sling Stuff!
put whatever you are flinging into the pouch (preferably, something soft for your first sling).
The object will have to have some weight to make it possible to spin the sling around your head. once you are holding the ends of the ropes, and you have your projectile in the pouch, check your surroundings. Make sure there is no one around you, even behind you. If you release at the wrong time, your projectile could go flying anywhere! Start to spin the sling around your head. Release the knot that is in between your pointer and your thumb when you feel your timing is right. When done correctly, your projectile will fly very, very, far! (I have gotten a water balloon to fly about 100 yards)


Jamman01 (author)2013-06-26


hInstance (author)2013-03-16

What happened to the video? When I press play it says that the video does not exist.

Air_Assassin (author)2011-01-28

Help I can't do this step do you have to cut the rope?

LilWayne (author)Air_Assassin2011-03-06

yes cut it in half

Air_Assassin (author)LilWayne2011-03-08


Air_Assassin (author)2011-01-12

This is awesome!

jack penny (author)2010-08-14

RUN-AWAY!!!, RUN-AWAY!!! love that movie

SirBrittanicvs (author)2010-01-20

I love it! How much range can you get?

sharlston (author)SirBrittanicvs2010-02-13

i sling golf balls about 100 yard

SirBrittanicvs (author)sharlston2010-02-21

Nice, I just braided a new one on Friday. Can't wait to try it out. :)

SirBrittanicvs (author)2010-01-20

I'd omit the duct tape, personally. Though it may work I'd prefer to reinforce the corners by doubling it up on itself and sew it together and whatnot.

Also, what kind of rope did you use?

sharlston (author)SirBrittanicvs2010-02-13

he used nylon rop by the loks of it

TheFawns (author)2009-12-29

 this is cool :)

Ben.land101 (author)2009-09-18

after reading through the comments, i noticed you said that a thicker string is better. well i beg to differ. the thinner the string, the faster you can sling it, the faster you sling it well, i think you know what happens. p.s. i have never had any tangling problems.

ninja of darkness (author)2008-03-15

why such a long rope?

how farther a point is from the center of the spinning motion, how faster it moves, and how more momentum (power) it has. it's basic physics, dude!

I think it's to add more power, but I found it much easier to start it spinning if it's about a foot of a foot and a half shorter than your shoulder height.

grut125 (author)2008-12-21

nice sling have you ever looked into putting your expertise to making air cannons. they are for sure the best thing that you can make for shooting things.

-insertnamehere- (author)grut1252008-12-25

actually, I have :) I have two currently assembled. One is freaking huge and shoots tennis balls (really far, I might add) the other I use as a shotgun for airsoft and paintball wars. it scares the crud out of people :P

grut125 (author)-insertnamehere-2009-02-21

i have three so far and each one has a changeable barrel.

halberdear (author)grut1252008-12-29

well yeah, next to real guns of course lol.

Zippy_Pyromaniac (author)2009-01-20

Made something like this a while ago, I was slinging goose poo into a lake for hours and then I fell in. Lol. Gonna make this soon

-insertnamehere- (author)2008-12-25

yeah, I'm about 6'4", so the longer strings might not work for other people who are freakishly tall :P also, if you use really small strings, it's much more likely to get tangled.

Wafflicious (author)2008-12-05

WERED YOU GET THE SHIRT.... MAKE an instructable on shirt buying please ;)

Wafflicious (author)Wafflicious2008-12-05

also, this is great for snowballing =)

53rp3nt (author)2008-10-23

Great Instructable. I will be slinging things off the big cliff at cross country camp.

-insertnamehere- (author)53rp3nt2008-10-24

cross country pwns! just make sure you don't hit anybody. I took out a small tree a summer camp with a rock once with this thing :). one of my favorite things to do with a cliff is to find a rock that about four people can roll, and roll it off. then you can take out huge trees!

AtomicFikus (author)2008-08-12

Monty Python is the best show in the world. Good choice of shirt. My friend Kurt and I used the killer rabbit for a school project. I think we aced it.

civet5285 (author)2008-05-20

Very nice. I will add I got better results from a vertical swing rather than horizontal (so, in other words, the sling starts hanging loose on my right side. I start it spinning forward so that it circles up from below and then behind me) and release the end as it comes up from behind. It seems to be more accurate, although I had to shorten my sling to accomodate my height and reach.

yeah, that makes sense...My sling was just to long to do it vertically :( I should have made it shorter.

Spint (author)2008-04-06

Really cool. I've been looking for something like this. +1.

Aburame Shino (author)2007-10-20

Very nice, my young Padawan. That is ironic. I am only 13. =P Lol. Anyway, I may be wrong, but I think that "simple overhand knot" in step 7 is called a "square knot" when made with two lengths of rope like you did. I believe it is used as a stopper knot? Anywho, very nice. Definitely a favorite.

smithy813 (author)Aburame Shino2008-03-19

you are wrong, he was right

Aburame Shino (author)smithy8132008-03-22

... O_O No, I think I'm right. That's a square not, but he IS right about it being simple. <code=sarcasm>Thanks for being specific about it, though.</sarcasm>

That's totally an overhand knot, except with two ropes. I was a Boy Scout, I'd know a square knot when I see one.

My bad. XD Thanks for clearing that up though.

Folin1 (author)HarryJackson2008-03-24

Agreed. Isn't a square knot something to do w/ 2 overhand knots

kenx_maniac (author)2007-08-23

how do you get the stuff to shoot i get the idea but when do you let go?

shepard1 (author)kenx_maniac2008-03-17

Physics man check rotational motion. You release at a right angle from where you want it to go. If you are right handed you let go at your 3 o'clock position. 9 if you are goffy. This is very important because it will determine you accuracy. think about it we missed a whole planet because we were less than 2 degrees off (Mars the first time).

It's kind of a subconscious thing for me now that I've done it for awhile.... I just went to the park and slung around some stuff to check when I really do release it, and found I let go when the sling is perpendicular (90 degrees) from the direction you want to sling your projectile.

tron1o7 (author)2008-03-14

lol i shoot a one of my lacrosse balls(for those of you who dont know how hard a lacrosse ball is it is basicly a lead ball wrapped in rubber)out of ur sling and it looked like it went really far and it broke somebodys car windsheild =P. thank fully i did it at my friends house and i did not get in trouble but i never did get my ball back...

thegunthing (author)2008-03-04

awesome. ive been having some problems with the rope/ release, but overall, great project.

chadoliver (author)2008-01-23

Good work! I was just thinking we needed a instructable on slings. Now who wants to make one on making an atlatl, or a staff sling? One site you might like to check out is The forums and 'guides and articles' sections are especially good - they have lots of advice on lots of different slings, and how to make them. However, I believe your sling it a bit too long.Slings this long are useful for heavier items, but they are a bit unresponsive and hard to aim. Usually the distance from the end to the pouch is the same as the distance between your head and your out-stretched arm - you have it way longer. Furthermore, with a shorter sling, only one revolution is needed before 'firing'. For example, in the underarm sling (the technique, that is), half of the revolution is just a gentle swing, then the other half is the 'power stroke'. This allows for much greater speed and accuracy. Of course, the coolest slinging ever is when you can do it in 'automatic' - catalan slingers could reportedly fire one lead pellet per second with this technique. Hope this helps, and happy slinging!

Waffles Will Rule (author)2008-01-03

Cool!!!! Anyway Can I use a long bunchy cords instead of rope? Thanks

I don't think the cords bunching up will cause much of a problem when slinging, but once you have slung, the cords may knot themselves.but, anyways, you should try.

cj360 (author)2007-09-13

i dont now about the water balls .if they are homemade then teach me how to make them.

-insertnamehere- (author)cj360 2007-09-13

try using a water filled tennis ball....fool-proof instructions here
if you don't have tennis ball, use something else, like a water balloon, or a zucchini! :) (ps DOn't forget to rate it)

whats up with you and zucchinis?

awoodcarver (author)2007-09-24

sigh I made a few of these over the years , but alas in Calif slung shot is a felony....not sure about tennis balls or balloons ........nice job

egadsman (author)2007-09-14

grrrr. i was just about to post a instructable similar to this one. (\___/) (+'.'+) (")_(")

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