Introduction: Make a Two Bladed Wallet Knife From a Hack Saw Blade
Make a Two Bladed Wallet Knife from a Hack Saw Blade
Step 1: You Will Need:
You will need a cheap hacksaw blade. Why cheap? So that the steel is right. High carbon not bi metal.
Bend and brake off a section of blade about the length of a credit card is long.
Step 2: Grind and Shape the Tip Your Blade. No Grinder: Use Aluminum Oxide Sanding Paper.
Grind and shape the tip your blade. No grinder: use aluminum oxide sanding paper.
Step 3: Keep It Cool by Dipping It in Water.
Keep it cool by dipping it in water.
Step 4: Grind the Teeth Off the Cutting Edge.
Grind the teeth off the cutting edge. The trick here is to only just grind off the teeth and no more as this is were the steel is the hardest and will keep the best edge. Note water dripping off blade: Keep the blade cool! or you will take the temper out and it will not keep an edge when you sharpen it.
Step 5: If You Want You Can Sharpen the Blade on a Sharpening Stone.
If you want you can sharpen the blade on a sharpening stone. But mostly it should be very sharp off the grinder.
Step 6: Now Make a Paper Sheath for Your Wallet Knife. Size Your Paper As in Photo.
Now make a paper sheath for your Wallet Knife. Size your paper as in photo.
Step 7: Fold Paper As Shown
Fold paper as shown
Step 8: Continue to Fold:
Continue to fold:
Step 9: Unfold and Then Fold Up Tip to Close End:
Unfold and then fold up tip to close end:
Step 10: Refold:
Refold:
Step 11: And Tape Closed:
and tape closed:
Step 12: Hold Knife As Shown to Use:
Hold knife as shown to use:
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33 Comments
10 years ago on Introduction
Awesome. Small enough to keep in your wallet
12 years ago on Step 8
the hole looks like a good lanyard hole
13 years ago on Introduction
Doesnt look to effective. I have a inch long swissarmy folding knife and a larger knife disquized as a key. Just other options to small self defense tools. I really like they key. It was only 2 dollars but very useful and sharp I sharpened the point so it can allso stab.
www.uniquedaily.com/wp-content/uploads/2009/05/key-shaped-knife.jpg
the bottom one is the exact one i have
15 years ago on Introduction
nice idea the saw blade idea is a good one.... ill probally make one to repace the razor blade in my wallet
Reply 13 years ago on Introduction
keep the razor dude.....just in case
13 years ago on Introduction
round the end and sharpen the dull side of this then you have a knifesaw
13 years ago on Introduction
is the thing for self defense or survival or something? if it is for self defense i have my jet black stiletto witch is bigger! but then again i wont always have my stiletto, i will make one of these knives that folds! ingenious!
13 years ago on Introduction
A little hard to hold.
13 years ago on Introduction
PlastiDip could work for a handle. Then still with the paper to save your wallet,coat, etc.
15 years ago on Introduction
I bet it would hurt just as much if you left the blade the way you bought it.
Reply 14 years ago on Introduction
the idea is self defense not assassination. ;)
Reply 14 years ago on Introduction
I think it would be the opposite. For self defense a shallow tear cut is effective in warning someone and producing a lot of visible blood without deadly damage to organs, but a ground-down blade would cut deeper and do more permanent harm, but the cleaner cust would not necessarily cause as much pain and startle the aggressor as much in the next few seconds.
Reply 14 years ago on Introduction
oops you right, i must been tired that day.
Reply 14 years ago on Introduction
Seriously!?
15 years ago on Introduction
This would not be a self defense item. Guaranteed loss of your own blood. But, a great utility tool idea.
Reply 14 years ago on Introduction
Indeed, plus when law enforcement sees a homemade cutting device they call it a weapon more readily than an off the store shelf _small_ pocket knife. When they see that someone took the time to make such a thing, they tend to assume a person planned ahead about using it as a weapon and knew of a danger but put themselves into that danger anyway, just as they would if someone carried a large combat knife instead of a small pocket knife.
14 years ago on Introduction
just buy a cheap knife cause you could cut yourself while tring to use this
14 years ago on Step 12
so all i need is a hack saw blade and that sand paper stuff
Reply 14 years ago on Introduction
"Abrasive grain". Don't get the two confused.
14 years ago on Step 7
try a maccano handle cos the bolts might fit through the hole at the end