Step 4: The Handle

Disarm the garden hose pistol. We will need the handle. Adapt the yarn cone. Then, use the iron angles and a metal strip to strip the handle to the launcher.
Can it rewind itself
You should make a shooting video
I've used something similar for years. I zip-tied a spinning reel to the underside<br>of a slingshot and put a small weight on the end of the line. For me, its primary function is shooting the line over trees and then pulling antenna wire back for HAM Radio use; Works like a champ. I always use the slingshots that have surgical tubing for the kinetic energy... While it's only good for 50-75 yards, it is consistently accurate. I use fifty pound mono-filament line.<br><br>rnc
<p>hey what is your call sign mine is KG5AOD</p>
I have fity pound nylon monofilament. But a very thin line has a problem: could cut easier the rescuer hands. I want to use the monofilamente for a speargun like the one in Batman Returns.
Simply awsome. Nice job! :)
Thanks Advar!
Amazing! What a sleek, wonderful creation. It would be interesting to have an adaptable projectile with different heads that could click in, such as a grappling hook, buoy, foam-tipped, or one with a little compartment (for getting emergancy supplies to hard- to reach areas).
Thanks a lot MU5ICI4N!! :-)
Use Para-cord and a monkey fist ?
try heavy fishing line, not steel
heavy line would mean a bit less distance tho, of course.
Just a thought: You can duct tape a fishing reel to the front of a slingshot (wrist-rocket type, not the &quot;Big Y&quot; tree branch type) and launch lines 100 yds.
Eres Espa&ntilde;ol o que?<br>
Soy Colombiano! De Bogot&aacute;! :-)
i gotta say M.C. Langer, this is a pretty sweet idea! probably will save a few lives dude!
Thanks Jmonty!! :-)
I can iamgine this with a spray propellent/ignition system like they use on potato guns, but I'm not smart enough to design it.
may i reccomend 550 paracord in place of steel cable
Is airplane wire too thick for this?
I guess.
Nice piece of engineering and application of reusable and repurposed materials. And in the vein of your request for comments from the instructable community, may I suggest the use of an eye splice in your cable instead of the much heavier cable clamps. A splice although not legally rated for supporting a load, it was used for a long time before compression sleeves and the like were developed. Also the eye splice being lighter would increase range and be less likely to snag on itself or other things (Batman's cape). You could put a copper sleeve over the barbed ends and solder in place, so you wouldn't have to get it perfect on the first try. Plenty of www info to help you do it. A lighter synthetic line would be best, but you are using what you have access to. &nbsp;Once again, well done, and keep up the good work
Thank you very much MaClay!!! It's a great suggestion!! :-)
This is impressive, and smart! As a former wilderness EMT, I can think of any number of uses for this, both rescue-related and otherwise (E.g., it'd make for an easy way to hang a bear bag.) Great work!
Thank you Doxsys!!!! :-)
Excellent work! With a little &quot;polishing&quot; I could see a definite market for this in a variety of areas.
Thanks Raykenn!!!
Parachute cord (sometimes called 550 or para cord) would be much lighter, would fly further, and most importantly is rated for supporting much greater weights than the thin steel aircraft cable. <br><br>The 3/8&quot; steel cable is only rated to support 30 lbs. while the para cord is rated for 550 lbs.<br><br>People often make this mistake, thinking the steel would stronger. <br><br>I use the thin steel cable for supporting a bear bag when I'm in an area where I've been told I have to worry about rodents (or occasionally bag smart bears) chewing through the supporting cord. Other than that I don't use it for much of anything.
Thanks for the advice. I will make some experiments with paracord.
Very nice idea indeed, although i must caution those who think this is ready for the prime time. In this form, you are still firing a metal projectile. NEVER, EVER fire it at/towards someone as you could make the situation worse(by ex. hitting them over the head). If you are in a situation with dire need and have only this first version to help, fire it ether way over the person (the line will drop to them with less of a thud than the aluminium projectile), or in front of them so the current brings the to the line. <br><br>This being said, I am a fan of the concept and will most likely make my own version in the distant future (with some sort of soft projectile).
Thanks Mathieulj. You have a point: if you don't use this concept properly, you could be killing someone instead of saving him.
this is wonderful. an inspiring start. i'm a sailor, and i have thought about something like this for an overboard person. i'm imagining a similar device, that was all built inside a PVC tube. the tube would have a looped strap on the bottom end for a grab handle. the pvc would have a inner and outer, slip fit tube. to cock the mechanism, you would slide the outer tube to the strap end, engaging a simple trigger latch that would pop out of the side of the tube when it was engaged. press the trigger and the weighted, projectile would shoot out the end of the tube. in an open water situation, you would have a conflict between weight of projectile - so it would fly, and lightness- so it would float where a person could grab it.<br><br>in a tense, emergency situation, throwing accuracy can be very bad, and you might not have a second chance. the antennae throwing devices in those video's are bulky, complicated, and expensive. great for antennae's, poor for a flood or overboard victim. you are aiming for something a person can make, easily accessible and inexpensive. super! i'll have to think about this one some more.
Thanks Thaikarl!!!! Well, I was from the Colombian Navy!! :-)<br><br>And you're absolutely right. About all.
You know, I look at your line launcher, and I think of all those porr folks who drowned off Christmas island yesterday who might have been saved if there had been a way to get lines to them. <br><br>Kudos, someone might make one and save a life<br><br>Steve
Thanks Steve!! And that's the idea. I don't want to see this like MY project, but OUR project. Making a good Line Gun between all could save a lot of lives!
what if you added a CO2 can and instead of the yellow rocket,you add a fiber glass hook??
Could be!
replace the spring launcher with a pneumatic system otherwise it will stay horribly weak. No point using a launching system for something you could do with your hand
What if you are a rescuer in the middle of a river and you don't have enough force in your hand for throwing a line? If you have a line gun, you could launch a cable to the nearest rescuer or to a branch. Having a steady position for launching a line is anything you don't have in many emergencies, and a spring powered gun could work.<br><br>You have a point with the hand thing. But, as I said, this is an iniciative, an open project. It will be good to see how you make the grappling gun with a pneumatic system.<br><br>
you could use interchangable co2 canisters and attach the onto the side of the gun
Not a bad idea!
A brilliant idea! By the way, I like your wire gun here very much. It's nice to see someone trying to make something with more potential use than fancy home decorations, hahah.
Thank you Procrasticus!!!! :-)
lol it was just a suggestion, I don't really have an interest in this and I doubt that anyone will go any further than making reccomendations, but hey I'm a cynical jerk. The throwing thing wasn't an insult just a bad analogy. here are examples of pneumatic launchers made for a similar application, but with far greater power. They also use fishing reels which might be a good idea for your launcher. <br>http://www.youtube.com/watch?v=AmEKemu3yck <br>http://www.youtube.com/watch?v=qd6NoqmTJP8&amp;feature=related. <br>oh also I'm fairly sure someone fit enough to become a &quot;rescuer&quot; would easily throw that distance whilst treading water :P
Your videos are great! But they still have a problem: the cord. We need to launch a cord (or line) capable of carry the weight of, at least, one person.
I know it wasn't an insult, and you're absolutely right about all you said. And the idea here is to make improvementes to this project. And... c'mon! The Sugru Life Hack is a very speed contest. I made this in one day. Now, without the presion of the closing date, I can make a better one (but with springs. I love springs!! ;-)
You look so awesome with that gun :-)
Thank you Pe-ads!! :-)
LMFAO - wow a total of maybe 12 feet distance; I can throw a weighted line way farther than that.<br>In fact I can and do use a 3 lb fishing weight tied to 20lb fishing line and can throw it from one end of your yard to the other.<br>The key is you throw over them not at them; they grab the line and then pull over the rope..
Yes. This is not the whole project. It's just the beginning. I will work in a better one, and I expect some makers start working in improvements to make a better line gun.

About This Instructable


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Bio: I'm Mario Caicedo Langer, from Colombia, former Navy officer and BSc in Naval Sciences. Right now I'm Technology Program Manager and Lego Robotics ... More »
More by M.C. Langer: Anti-cat countermeasures (kind of) Ultimate Robo-Planter (with light and detachable anti-spill module) Superheroic Wrist Gun (made of plastic trash and an old leather boot)
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