Picture of Make a knife out of an old hacksaw blade
I couldn't sleep, so I made knives.  (For Burning Man gifts.)

1. A dull hacksaw or bandsaw blade
2. Electrical tape or really wide heatshrink tubing

1. A piece of paper
2. a ball point pen
3. a sharpie
4. a file or other method to score/cut the blade
5. pliers to break the blade
6. a vise to hold it
7. a grinder to sharpen the blade,
8. and electrical tape to make a handle.

If you are not familiar with grinders or otherwise do not know proper grinder safety,
please do not attempt this and ask someone for assistance.

Submitted by Ace Monster Toys for the Instructables Sponsorship Program

Step 1: Designing the shape

Picture of Designing the shape
Draw with a pen an outline of the hacksaw blade on the piece of paper.  We used a blade so dull that it was described as "polished".

Choose a point shape and any details you may want.  We used square cut for these illustrations.  Use your hand to figure out where would be comfortable to hold from and where your thumb will go.
davr.org (author) 2 years ago
This instructable was made at Ace Monster Toys, an awesome hackerspace in Oakland, California -- if you're in the area please stop by sometime!
EmmanuelHesus2 months ago

Interesting.... the shape of the knive is so Amazing.

EmmanuelHesus2 months ago

Wow. This is the most interesting for me!

SmellierCow2 years ago
wouldnt the blade bend and flex?

It wouldn't, if you use a bimetal high-speed blade. Bimetals are little bit harder.

egullett12 months ago
great and easy thing to make
thoraxe2 years ago
I suggest dipping the blade in water very often when grinding. Keeping the blade cool helps to preserve the temper and keep the blade as sharp as possible.
wood wizard2 years ago
I couldn't sleep, so I made knives
in my case :
i couldnt get an airsoft gun so i made crossbows
same thing i was gonna write an instructable about
Nicely done i must say :)
aesquivel2 years ago
The steel from these blades is very brittle and extreme caution should be taken while using them to avoid cutting your own hand if it breaks (because it will break).
rgilliam2 years ago
You can also use plastic tool handle dip from hardware store.