Picture of home made tension crossbow(no rubber bands!:D)
in this instructable i will show you how to make a simple crossbow that uses hacksaw blades to create tension on the string instead of using rubber bands. i dont know i was just sick and tired of people making crossbows with rubber bands...so i invented the only crossbow on instructables.com that uses tension to shoot!!!!!!!!!!!!!!!!!!!!

Step 1: Tools/materials

Picture of tools/materials
a standard use saw
a work bench
1 clamp

a clothes pin (the one with a spring)
some duct tape
a long* piece of string}*
a piece of wood (1" x 1" x 5"**)
and last but NOT least:a **couple** of hacksaw blades

*depends on how far you prefer the "crossbow limbs" to go back
**5" at the least
****use more than 1 to get maximum torsion from crossbow!!!!!!!!!!!!!!
}*dont use yarn type string(soft and springy) try using twine or string bought at a hardware store

Nice but what kind of ammo will you shoot

part 2...
but youve been impaled by my pen!
tis nothing!
but your bleeding profusely!
no matter, the black knight always prevaaaaaallllssss.
*black knight falls unconciese from blood loss*
now we ride!
*clop clop. clop clop. clop clop.
___ _____
|___ | |\ /
| | | \ /
| __|__ | \/
que monty python music...
*bum bah bum bah bah bum! Bum bum bah bumbumbumbah!*
fellow sir night! you fight with the might of a many men! will you join me on my quest for the holy grail?
*no response*
sir knight, will you join me?
*no response*
very well. we shall be on our way then...
none shall pass.
none shall pass.
but you must!
then you shall die.
at arms! *pulls out pen crossbow, pulls trigger*
tis but a scratch!
hogi4 years ago
Great instructable,I used a 18 inch lenght of Perspex instead of saw blades which made it ridiculously powerful and modified the trigger a bit but thanks for the idea
greymatter21 (author)  hogi4 years ago
lol nice and thanks
wolfman21524 years ago
isnt that kinda dangerous using sawbades
greymatter21 (author)  wolfman21524 years ago
not really its just a hacksaw blade and hacksaws arent sharp....
Actually, hacksaws ARE sharp. Have you ever been cut by one? It hurts like #311.
Hacksaw blades may have small teeth, but those teeth pack a pretty nasty punch.
greymatter21 (author)  arpoky4 years ago
theyre not sharp if u dont use em like a saw lol >.>
alex46465 years ago
maybe use a thin, bendy piece of wood thats somewhat strong (i suggest those free paint sicks from home depot cuz they are bendy and strong and free. maybe also invent a better trigger system(like a real crossbow) just to make it more awesome :) i like it.
greymatter21 (author)  alex46465 years ago

thx dude;D
i prefer the later 14th century crossbows(steel) than the earlier versions of crossbows which were often a stick attached to a bow of wood or a bow of wood,sinew,and animal tendons.all in all, steel limbs are more efficient when making a crossbow because it wont snapXD

snapping can ruin a bunch of hard work so good thinking
why not carbon fiber?
greymatter21 (author)  bowow08075 years ago
i dont gotz any:( (im not very resourcefull)
lol, this is better than my other crossbows which aren't really crossbows, but are more like crossbow-like paper crossbows. Thy shall subscribe!
jtobako5 years ago
Torsion is twisting, I think this is tension-pulling force.
greymatter21 (author)  jtobako5 years ago
o lol i knew it was 1 of those two forces...