New tool: EVVA Dual Gut Key

The EVVA Dual is a lock with twelve spring loaded sliders and two sidebars. One on each side. It is an exceptionally hard lock to pick. Reinder Stegen, a gifted picker, found gutting of the Dual error prone and devised a tool to help with gutting the lock instead.

EVVA Dual with the correct key inserted.

For a normal pin tumbler lock you can gut the lock once the plug rotates freely. This can, for example, be achieved by picking, back shimming, or using the key. The EVVA Dual can’t be gutted in the same way as a regular pin tumbler lock as the sliders protrude the cylinder both in the resting position as with the correct key. While the housing has grooves cut for the sliders to slide and rotate this also means that gutting the lock is much harder to accomplish.

EVVA Dual Gut Key moved the sliders down

You will find more detailed pictures on the EVVA Dual on a recent upload to the Lock Wiki. This wiki has been quietly expanding with lots of detailed pictures over the past year. Certainly worth a look at the Abloy Easy and the Chubb Mark IV Manifoil that are recently added.

Let’s get back to the EVVA Dual as that’s what this post was all about. The solution to gutting the EVVA Dual is this Gut Key (Set-up key for gutting) designed and 3D printed by Reinder. It solves the problem by moving the sliders down to the fictitious ‘shear line’ making gutting the Dual a breeze.

EVVA Dual Gut Key by Reinder Stegen

Reinder Stegen was kind enough to allow inclusion of the pictures and STL under CCBY4.0.

Alternative download for the Gut Key:

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