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A Professional’s Guide on How to Make a Tension Wrench

A wrench, or you can call it a spanner, is a tool used to open or tighten the nuts and bolts or prevent them from turning. They are handy for grip or many other things. They also have different types for different functions, such as tension wrench, open-end wrench, box-end wrench, combination wrench, spanner wrench, or hook spanner.

If you provide locksmith services, you must have a tension wrench, and you need to know how to make a tension wrench.

Tension Wrench for Lock Picking

If you also want to pick a lock easily, do not have any tool for it, and do not know about any simple method, you can learn everything here. Otherwise, you can get the service of lock repair and replacement in Forest Park. However, you will learn how to pick a lock with a tension wrench; that is why you have to learn to make a tension wrench.

Well, you can start learning the craft of so many locksmiths. 


Lock picks and tension wrenches are two essential yet necessary tools to pick a lock. If you do not have these tools, then no need to worry about it. Firstly, you can use a butter knife for a lock pick—secondly, a windshield wiper blade for a tension wrench.

After getting these tools, you will pick any lock in no time. You will be able to pick master locks, door locks, and even deadbolts.

How to Make Tension Wrench

Prep the Hose Clamp

Now, get a hose clamp for making lock picks. There are few reasons to choose them because they are made of rigid and very thin steel, which is helpful in this work. We can easily cut the slotted part of the clamp with a Dremel or even with any suitable hand tool.


Hose Clamps are cheap and available in every hardware shop. So, you can get them from your nearest hardware shop in case you don’t have them at home.

I think you can even find them in your backyard or your garage.

Now, unscrew the hose clamp entirely and lay it in a total flat condition.

Cut It and Shape the Pick

Firstly, secure the flattened clamp into a vice. Do not worry if you don’t have any vice because you can use any cinder block to hold it in place. Secondly, cut the strip off from the slotted part of the hose clamp. Use pliers to hold the loose end of the clamp. 

Please use a dust mask, safety goggles, and protective gloves.

Clean up the pick by using the Dremel or a file if you do not have a Dremel. Use pliers to bend up the end of the pick slightly. This process will help the pick to get under the pins.

Cut and Shape the Tension Wrench

Cut a little bit more of the hose clamp for the tension wrench while with the clamp still under the cinder block. Finally, use the pliers again to bend the tension wrench from the end.

Apply Sugru

Clean up the rough edges of the tension wrench with the help of a file or a Dremel. Clean up for only those parts you have to insert into the lock and use Sugru to cover the rest of it, which is not going into the lock. If you are having any trouble, you should hire a professional for lock installation in Forest Park.

You can also bend the end of your pick because it will allow you a better grip. After covering it with Sugru, rub dish soap over the Sugru and clean it to get a smooth texture.

Hand Fatigue

You will be able to effortlessly grip the picks after applying the Sugru, which will ultimately help in reducing hand fatigues. It will feel comfy and hey. Now, it’s time to let the Sugru cure overnight.

How to make Lock Picks

There are a lot of ways to make excellent and helpful lock picks at home. However, there are better ways to make lock picks, but this one can be the easiest. Maybe it is helpful to leave ‘teeth’ at the end of the pick you are using because this will help push the pins out of the tumbler.

Bobby Pin Pick

A bobby pin has only one bend that connects two shafts, of which one is straight, and the other one has wavy curves. Both of the shafts have rubber tips at their end. 

Remove Rubber Tip

Use a pair of pliers to remove the rubber from the end of the straight shaft.

  • You can also remove the rubber tip with a pinch of your teeth, but it has a risk of damaging your teeth. 

Straighten Out the Bend

Undo the bends in the bobby pins with your fingers or use pliers in case of need.

You don’t need to perfectly straighten the bend, but it is better to get closer to the straight.

Create a 45-degree hook

Clamp the jaws against the pin on end, which is without the rubber tip. Grip the pin with your other hand nearly up against the pliers. Grip the pliers tightly and bend the clamped tip by bending your wrist at an angle of 45-degrees.

  • Bend either upwards or downwards
  • You can also stick the tip of the pin into the lock and bend the pin at a 45-degree angle.

Also Read: DIY: Vent Extender