Making a Knife From Coil Spring
by Robinson_knives in Workshop > Metalworking
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Making a Knife From Coil Spring
![A6DC0D2D-69A0-4496-90FA-58FA65D43421.jpeg](/proxy/?url=https://content.instructables.com/F70/GT25/JU6S2DOO/F70GT25JU6S2DOO.jpg&filename=A6DC0D2D-69A0-4496-90FA-58FA65D43421.jpeg)
I take a old coil spring from a car and turn in in to a Viking seax and you can to
Gather the Steel
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I use old Honda suspension coil spring and cut a pice off with my angle grinder
Forge the Steel Flat
![B6A2B693-FF15-4224-B431-478757049D02.png](/proxy/?url=https://content.instructables.com/FFE/3KCW/JU6S2CS7/FFE3KCWJU6S2CS7.png&filename=B6A2B693-FF15-4224-B431-478757049D02.png)
Take the pice of spring heat it up to a hot orange color and use a hammer and anvil to straighten then flatten the steel in to a useable billet for the knife
Forge the Blade
![BB9A8F7F-0496-43AD-BDE3-A1454EA97BEB.png](/proxy/?url=https://content.instructables.com/FFW/891T/JU6S2D1D/FFW891TJU6S2D1D.png&filename=BB9A8F7F-0496-43AD-BDE3-A1454EA97BEB.png)
![4495275E-9A38-48AC-B30C-B0DDB65F0097.png](/proxy/?url=https://content.instructables.com/FF3/W1SS/JU6S2D2K/FF3W1SSJU6S2D2K.png&filename=4495275E-9A38-48AC-B30C-B0DDB65F0097.png)
Use the hammer to move the steel in to the shape you like I went for a Viking seax style blade
Forge the Handle
![1CEFCB45-3AF1-453D-BFBF-EAAACDF4E7A5.png](/proxy/?url=https://content.instructables.com/FC3/QBRO/JU6S2D9O/FC3QBROJU6S2D9O.png&filename=1CEFCB45-3AF1-453D-BFBF-EAAACDF4E7A5.png)
Using the horn of your anvil share the handle to what you think will work best then let the knife cool to air temperature
Grinding the Knife
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Using a belt sander grind the handle flat and Grind bevels on either side until you have a thin edge
Heat Treat
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Heat up the knife to a orange color and quench in oil until it is cool to touch then temper the knife at 450 degrees for 2 hrs and let cool and your knife is ready for a handle