Introduction: Credit Card Grappling Hook

The credit card grappling hook is a whimsical little project that combines a credit card, some simple hardware, fishing line thread, and a sewing machine bobbin.  It's functional for light grappling duties, but is mostly just meant to be used as a toy and for entertainment.

Step 1: Materials

The first step is to gather the materials.
  • 2 credit cards
  • fishing line
  • rubber band
  • sewing machine bobbin
  • bolt
  • 2 nuts
  • wing nut
  • 3/16" binding post to fit bobbin

Step 2: Attach Fishing Line to Hook

Using a larks head, attach one end of the fishing line to the grappling hook.  Assemble the grappling hook so it matches the one in the photos below.

Step 3: Wind Bobbin

Wind the fishing line around the sewing bobbin just like you would wind thread on the sewing machine.  This is a fast, clean and easy way to load up your spool with many feet grappling line.

Step 4: Tape Two Cards Together

The structure for the grappling hook is basically just the credit card itself, so in order to keep it stiff and strong, I used double sided tape to stick two cards together.

Step 5: Drill Holes

Drill holes in the card for the hook launcher (rubber band) and the binding post that will hold the cable spool (sewing bobbin).

Step 6: Attatch Spool to Card

Attach the bobbin to the card using the binding post and then loop the rubber band through the top hole to create the elastic launcher.  I made a slight dimple in the back edge of the card that the rubber band fits into which allows me to easily stow the grappling hook when it's not in use.

The last steps are to go shoot at stuff, try to real it in, and to have fun!

Comments

author
sdbersey (author)2011-06-24

so how does the hook retract?

author
ChrisC1 (author)sdbersey2014-08-25

ur hand lol

author
adale123 (author)2013-05-28

how far can it shoot?

author
01glide (author)2011-11-22

I like it. Imagine over-the-wall cubicle treasure hunts--snag it and you get to keep it ! But, as the safety rep, I would love to find this on someone's desk. I'd have a good presentation at the next quarterly. Remember...It's all fun and games until someone loses an eye.

author
curious youth (author)01glide2012-04-20

losing a nut isnt fun either

author
rockyrakun (author)2011-07-02

Totally wizard!

author
marley57 (author)2011-06-13

THAT IS AWSOME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! You can hook lots of cool stuff with that thing.


:p tottaly rad man

author
dariokastro (author)2010-01-21

y de que utilidad es este artefacto.

author
alcurb (author)dariokastro2010-01-21

Este artefacto es un aparato para subir paredes come si uno fuera un super-espia, pero solo sirve para arrastrar sillas or terrorizar a su gato :)

author
yeah i know (author)alcurb2010-01-21

Dude I love google translate!

author
g dude (author)yeah i know2011-04-09

isnt it beastly???

author
yeah i know (author)alcurb2010-01-21

Ha tienes razón! Deben hacer una versión más grande ...

author
ppsailor (author)dariokastro2010-01-21

Saludos Dariokastro !
  Este artefacto, lo puedes utilizar como rescatador de barcos a escala, que se han quedado varados en alguna piscina, lago, estanque, ETC,  por alguna falla.
 En  nuestro grupo de Modelismo Naval, lo llamamos "*911" (asterisco 911) o "rescatador", es muy útil, desdeluego es de un diseño diferente, ya que utilizamos un carrete mas grande, sedal o cordón, y una pelotita de esponja en un extremo.- Asi es que yo lo encuentro ideal para este propósito, ya que es de reducido tamaño y puedes llevarlo en cualquier bolsillo.
  Puedes visitar el sitio en la web, de Modelismo Naval de Reciclado, es muy intresante: http://mx.groups.yahoo.com/group/ppnautica.
Estaremos en contacto
Atte. PPsailor 
 

author
lolo11113 (author)2011-02-28

what is wrong with the spanish speaking?

author
ElvenChild (author)2010-12-24

Buenos dias (Senor) como Esta?

author
Capt. Kidd (author)2010-06-29

i hate how you have a drill press and i dont

author
nk97 (author)2010-04-30

Really nice idea. Keep up the AWESOME work!!!!!!!!!!!!

author
rosesand56 (author)2010-01-21

Sew, what is the purpose of this?

author
brickman93 (author)rosesand562010-04-25

absoluty nothing!(no jk its just for fun) 

author
Veve Tech (author)2010-02-19

I'm gonna build one and harrass the teacher

author
Seleziona (author)Veve Tech2010-04-03

lol

author
mrbones121 (author)2010-04-03

ya go grappling hook

author
thelastonekills (author)2010-02-15

this thing is cool

author
inventordude14 (author)2010-02-06

 cool! im going to build a few of these for my friends

author
awesomemom (author)2010-01-31

so what is this supposed ta do?

author
Biohazard1194 (author)2010-01-18

Wait... Everytime I shoot it (I got one made last night in my sleeplessness) it just hits the card.... How do I fix it. I tried shooting from every angle possible and it always just hits the card or barely misses.

author
noahw (author)Biohazard11942010-01-19

Mine seems to work fine.  I just aim like normal with the rubber band hand and then pivot the back of the card down a bit to keep it out of the way.  Interesting...I haven't had a collision yet.

author
Biohazard1194 (author)noahw2010-01-20

I found my problem... my screw/bolt was alot bigger and heavier then the one you used. I went out to the garage and found some smaller/lighter screws/bolts and fixed it. Now it does great  :D

author
an_artist (author)2010-01-19

:,D wel all i can say is lol-rotc (laughing out loud - rolling on the chair) ..."admin-made credit card ibles"...

author
hi111 (author)2010-01-18

 i am swinging on my bunk bed yay 
jk Still fun

author
=SMART= (author)2010-01-18

hahaha thats really cool,
You could sharpen the wings of that nut to make them grip more and superglue a match to the bobbin to use as a handle to wind it in.

very nice 5/5

author
Kryptonite (author)2010-01-18

You there! Stop larking about with credit cards and get some real work done!

Wait did you say grappling hook? 5/5!

author
Biohazard1194 (author)2010-01-17

The second I find an old card or two I'm making one :D

author
fwjs28 (author)2010-01-17

heh-heh- heh- heh...heh- heh...BUWAHAHAH
oh the fun you could have with this little guy :D 

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