3 Simple Ways to
Share What You Make

With Instructables you can share what you make with the world — and tap into an ever-growing community of creative experts.

PhotosPhotos

Share one or more photos of a project, recipe, or whatever you've made, quickly and easily.

Step by StepStep-By-Step

Share your step-by-step photos with text instructions of what you made so others can do it too!

VideoVideo

Share your how-to video. You'll need your embed code from a video site such as YouTube.

Make a sling (weapon) out of a grocery bag! (Plus two bonuses! "How not to use scissors" & "Replace bandaids with sports tape")

Make a sling (weapon) out of a grocery bag! (Plus two bonuses! \"How not to use scissors\" & \"Replace bandaids with sports tape\")
«
  • Step 000.jpg
  • Step 00.jpg
(I came up with this idea during the Recycling-themed contest, but I hadn't the chance to instructable-ize it till now.)

Imagine:
You're stuck on a island with no sign of human habitation except some litter bobbing at the shoreline. You need to hunt the wildlife for food (or, if you're a vegetarian: there's a vicious critter (or coconut) stalking you, and you must kill it).
What do you do?

Construct a make-shift sling out of a plastic bag!

My goal was to create a reasonable sling out of a plastic bag using the simplest possible construction.
It's not all that accurate, nor powerful, but you're using less than half a plastic bag.
You're getting quite a lot out of this little scrap of trash.

Materials:
- A plastic bag (grocery bags work well, but some of the classier, thick mil bags won't)
- Scissors (also useful for close-quarters combat with that vicious critter!)
- ... and some bandages + first aid cream (see step 5)

General construction:
2 x ropes from twisted strips of plastic
1 x cradle from folded rectangle
1 x finger loop

Project takes about 10-20 minutes, possibly less.

Don't poke anyone's eye out, don't strangle puppies with the sling. General safety rules apply, but by and large, this sling is a rather tame weapon. (I think you need to be more conscientious that your left-over plastic isn't a choke hazard than over projectile injury.)
Honestly, I'm more likely to use this to lob crumpled paper at my friends than anything else, so I'm blatantly ignoring the "don't shoot people" rule.
 
Remove these adsRemove these ads by Signing Up
 

Step 1Snip, snip

Snip, snip
«
  • Step 01.jpg
  • Step 02.jpg
  • stp1 groc bag diagram.gif
Get a bag.

Flatten it out so that the layers are neatly folded.

Across both sides, in line with the handles, cut two loops of plastic bag.
- With most grocery bags, the plastic is folded accordion-style and sealed at the handles
- If you trim about 1.5inches off the edge, you should end up with a continuous loop of plastic (with little flaps at what used to be the top of the handle and the bottom of the bag)

It might help to mark where to cut (I can't cut in a straight line unless I have guides)

Now, cut off one set of flaps so that you no longer have a loop, but a single strip of plastic.
« Previous StepDownload PDFView All StepsNext Step »
34 comments
Jan 7, 2010. 5:44 PMzachthebeast says:
i am having trouble with step 6 can u give more detail????pls
May 22, 2012. 2:43 PMdoughnutguy1 says:
Basically, If I understand this correctly, You must take a roughly 5"x6" piece and fold it in half twice length-wise and then tie an end to each rope like thing.
Nov 9, 2011. 9:47 AMcleage001 says:
Cute bandage.
May 23, 2011. 11:47 PMbenduy says:
a easier way to kill a animal is to,stick the bag on its head, you have more of a chanch of hitting it! :)
Sep 23, 2010. 3:45 PMDrPeper says:
I wrote an instructable on how to make a 7 part braided rope from plastic bags, it might make a slightly more durable sling. Also I thought using the techniques posted elsewhere here on instructables which fuse many layers of plastic bags together using a clothing iron might make for an interesting idea for a cup/pouch for the rock.

But nice Instructable!  It got me thinking.
Apr 11, 2010. 3:45 PMzigzagchris says:
vaio jealousy
Jan 3, 2009. 10:45 AMimshanedulong says:
have a different way to make a sling: http://www.instructables.com/id/How_To_Make_a_Rock_Sling/

It uses duct tape and tells you how to use it.

Jul 5, 2009. 11:50 AMMatt21497 says:
SPAM!!!!!! Ps in your comment you forgot to say tell your friends about it (=
Jul 18, 2009. 11:28 AMimshanedulong says:
Sorry. I didn't mean it as spam, I was just telling people other ways to make these!
Jul 19, 2009. 8:47 AMMatt21497 says:
I was joking didnt you read the small print?
Jul 5, 2009. 11:53 AMMatt21497 says:
You stole my idea for an instructables no no no no NO!
Dec 21, 2007. 2:15 AMjackandjill says:
you would proberbly be safer punching the coconut
Jun 2, 2009. 8:34 AMbubba j says:
na i propboply would stab it with a pice of sheet metal from the wreak
Dec 8, 2008. 6:59 PMkill1234 says:
Do you HAVE to use sports tape??
Oct 27, 2008. 8:36 AMpandaboy292 says:
i alaws draw a smile face on my band-aids.nice instructable i'll have to try it.
Aug 3, 2008. 11:52 PMcj380 says:
can i make a sling from jeans pants i meant for the pouch.whill it stay there or tear in half.
Mar 25, 2008. 7:57 PMLemon_Asakura says:
Cool! I am soooo making this!
Mar 5, 2008. 4:03 PMcowscankill says:
HOLY SNAP!!! I made this, like, quick, went outside and threw rocks into my coldisac(sp?) I hit a tree in someones backyard on the OTHER end of the coldisac. this is great. Water proof too
Mar 5, 2008. 3:38 PMcowscankill says:
swing it round a couple of times for momentum/velocity
Feb 23, 2008. 3:46 PMKiteman says:
I made these with my science club this week - string and carrier-bag, bodged together with minimal skill, and they still had tennis-balls flying all over the playground. Much fun.
Feb 23, 2008. 3:27 PMKLUTZYengineer says:
Well - interesting. I really liked the smiley-face home made first-aid ( highlight of the Instructable )
Sep 26, 2007. 5:27 AMdataphool says:
Very instructive! Especially, steps 4 and 5, where you wisely elected not to give the scissors a further opportunity to perform a further indignity on your person.

Although, I try to recycle, and recycle, and recycle; the pesky little beasties threaten to overwhelm my home if I fail to maintain constant vigilance. It was so much simpler, when I was a boy and we merely had brown paper bags. Of course, we had a different problem..
Sep 20, 2007. 3:20 PMDeadpunk says:
Speaking has a vegetarain and the ocasional out doorsmen thoughs coconuts can be very dangerous critters what whith there tendency to use arial attacks directed right at your nogen. But any ways great instructable my family has tons of those plastic bags laying around i might I think i'm gona put a couple of them towards something constructive so i can then induldge in the plesures of being destructive :p
Sep 16, 2007. 7:48 AMAburame Shino says:
Bravo! Though I am still a wibble beet unclear on how you did Step 1, cutting the handle in half, and it stil be completely intact or something in the picture. O.o Eh. You get what I mean. Otherwise, it are the pwnage.
Sep 20, 2007. 2:37 PMAburame Shino says:
Thank you very much! It helps a lot. I don't know if you just added that, or if I just overlooked it. =P
Sep 13, 2007. 12:26 PMWolfsire says:
Not a bad instructable or concept. I've seen a few sling making site and I think your might be too small to be very effective. I know you qualified it, but maybe I can offer some improvements. Basically, make it bigger. IIRC, the sites referenced specific measurements based on arm length etc. I have also experimented a fair amount with making cordage out of plastic bags. I prefer to cut off the handles and cut off the melt-sealed bottom. That give you a loop. You can create a chain by linking several of these together to get longer cordage. You can make the cordage thinner by cutting the loop into several loops, but this stuff is not that strong, so the smaller you go, the easer it is to break. Your technique for smoothing out the cordage is very similar to mine, but I would say keep twisting (before folding in half and letting it coil around itself) until it starts to kink in places and coil at points by itself. This will make a tighter cord. You might also consider using multiple chains of loops for a single cord for more thinkness and strength. If it is tight, you get more strength per given thinkness. I would definately consider using you idea, but if I found twenty garbage bags on the beach, I would use them all for a sling, or maybe for a cordage backed bundle bow. :-)
Sep 15, 2007. 11:28 AMWolfsire says:
Sorry, not pic. Your instructable cut the two pleat side of the bag. The handles and bottom are the other two of the for sides when laid flat. The handles are the part you normally carry the bag with. The bottom is opposte where it is melted closed. Platic bags and plastic spoon? Sounds interesting.
Sep 15, 2007. 11:17 AMhunter cd says:
nice sling
Sep 13, 2007. 6:41 PMpyro13 says:
nice. ive never thot of this... thanks for the idea
Sep 13, 2007. 12:29 PMWolfsire says:
Oh, yeah, maybe those vegetarians can use the sling to knock down coconuts.

Pro

Get More Out of Instructables

Already have an Account?

close

All Steps Viewing
View all steps of an Instructable on the same page when you're a Pro Member.

Upgrade to Pro today!
69
Followers
9
Author:ryzellon