Tension Wrench: Twist Flex vs. Normal

[nite0wl]

<snip>However, if you apply too much tension can't you break the lock? Why would you want to apply so much tension that a twist-flex would bend?

As BillDeserthills pointed out, usually only locks like the Smartkey which has a lot of very weak plastic or pot-metal components in load bearing roles are remotely likely to break under heavy torsion, and even then you are more likely to bend or break your tool before you break the lock. Heavy tension is more likely to screw up your picking attempt. Twist handles will usually bow or bend over time just through normal use.

Heavy tension is required to overcome the resistance from the spring mechanisms in some padlocks, damaged or dirty locks with debris or hardened lubricant blocking plug rotation, or simply because certain locks actually respond well to it. There are also certain picking techniques which require heavy tension at certain points in the picking process.

[parkourer]

This is my #1 go to turning tool I have been using for over 20 years. It is made from a common street sweeper brush. I also use the same style made from windshield wipers and in several different sizes. I prefer the length of the tool to be flat because I can put a bend in it, by hand, at any moment of need. The length , twist, and other details may vary considerably depending on your personal need at that moment. There is NO one design that is always right.
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Woah.. It lasted for over 20 years? That's impressive Sounds really handy! However, doesn't it bend very easily, since you have had it for this long, and probably bent it a lot?

Guys, thanks for all your replies, even though i haven't been replying often, it has helped me a lot!
I am going to make my own wrench much like Raymond's when i have the time. Let's keep this post still going because i still have another doubt.
A lot of you have been saying you use windshield vipers. How do you get the spare? (You don't actually break them off of your car do you? )

I wouldn't want to do any damage to my car, so any other recommended materials?

[Raymond]

Sorry Parkourer,

I meant to say that I have been using the same design not the actual same tool. I have to make 4-5 per year as I really do bend them often. Sometimes I have to put a 90 degree bend in the handle just to get it into a lock due to a wall or other obstruction too close to the lock. I just do what I have to because I can replace one in under two minutes.

Wiper blades can be found in the trash can of most auto parts stores, especially just after it starts raining. If your state has a vehicle inspection law look for inspection stations where this might be a saleable item that must be replaced to pass inspection. Check the truck stops and diesel mechanics for larger pieces. Be very careful pulling the steel strip out as some of the wipers have very sharp barbs that will get you.

[nite0wl]

Peterson makes a bending tool and a series of stock assortments. These tend to be a bit wide and the thicker ones can crack if you are not careful when applying a tight bend but they work well if you want to be able to shape the tip.