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Few notes about EU wiper blades

When it comes down to it there is nothing better than manual tools for your Lock pick Set, whether they be retail, homebrew, macgyver style. DIY'ers look here.

Few notes about EU wiper blades

Postby ialma » 18 May 2008 15:49

I had the lucky chance to put my hands upon a hundred of wipers steel inserts so I found out that not every blade is similar to the others.
Blades came from every kind of car wipers -european, american, etc etc- so I assume the infos I'm providing can be applied to a large amount of wipers.
What I found out :
Wipers come in three main dimensions :
1) 2,3-2,4 mm width and 0,5 to 0,7 mm thickness
2) 2,7 mm width and 0,7 mm thickness : these are much more difficult to find than the 2,4 ones, I'm still trying to nail down which car brand uses standard wipers with 2,7 width
3) 4,1 mm width 1,1 mm thickness. These are used in vans, single wiper cars, line my old FIAT UNO :-)
Image

Another important thing is the material wiper blades are made of.
They can vary from less-to-more quality steel.
How can we discover the quality of the blade

I use my bending test :
Image
And then I spring it open.

More iron than steel :
Image
The blade remains heavily bent.

More steel than iron :
Image
the blade springs back in its position without bending.

I make picks from steel blades and I usually discard iron ones since they bend much more easily.

Hope this has been helpful.

Peace!

IA
If you can't describe what you are doing as a process, you don't know what you're doing.
W. Edwards Deming
ialma
 
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Postby steve0527 » 19 May 2008 8:35

I have a lot of wipper inserts to, but the bending trick you showed was new info for me, thanks. Im going to do that for now on.
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Postby ialma » 19 May 2008 15:08

consider also that iron wipers are perfect to make tension wrench.
while steel can be much more flexable, iron blades react quite differently to pins torsion thus generating a different response.
make two tensors, same dimensions, one with a steel blade and another with an iron blade and tell me if you feel the difference :-)
If you can't describe what you are doing as a process, you don't know what you're doing.
W. Edwards Deming
ialma
 
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Joined: 4 Mar 2008 6:45
Location: South Italy

Postby mh » 19 May 2008 15:17

Good idea to measure the flexibility like this!

I was a bit confused at first about you mentioning iron and steel, because steel is an iron alloy - http://en.wikipedia.org/wiki/Steel

I think maybe they are all different types of steel, but it seems that they come in different qualities.

Cheers,
mh
"The techs discovered that German locks were particularly difficult" - Robert Wallace, H. Keith Melton w. Henry R. Schlesinger, Spycraft: The secret history of the CIA's spytechs from communism to Al-Qaeda (New York: Dutton, 2008), p. 210
Image
mh
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Postby Afisch » 19 May 2008 15:30

Presumably refering to the level of secondary metals or carbon content in the origional process.
Image
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