Magnet insert for Wera 190i VDE 1/4" Nut Driver

This converts your Wera 190i VDE ¼" Nutdriver to a Bitholder accepting standard ferromagnetic bits by adding a magnet into the empty cavity.

There are reviews on Amazon that incorrectly criticize the nutdriver for the bits falling out. They're confusing a nutdriver with a bit holder!

Sadly Wera does not offer an insulated bitholder accepting standard bits.

If you already own an Wera 190i VDE ¼" Nutdriver and want to convert is to a bitholder, this allows you to add a cylindric neodymium magnet 4x6 mm (diamenter x length).

As tolerances are tight, you may have to adjust the values described here: https://wiki.bambulab.com/en/software/bambu-studio/xy-hole-contour-compensation

• X-Y-Hole Compensation to make the magnet a tight fit
• X-Y-Contour compensation to make the plastic part a sliding fit

Important: Please Read BEFORE inserting into the nutdriver!!! You may save some trouble and fiddling around.

1. First print the holder as is.
2. Test inserting the magnet carefully. Do not push it in completely!
   You want to achieve a friction fit, where the magnet is not pulled out by pulling with another magnet or a bit.
   1. If it slides just in (and fall out again) → decrease X-Y-Hole-Compensation
   2. If you cant get it in → increase X-Y-Hole-Compensation

3. Pull the magnet out (if it is in). Do not insert the printed part into the nutdriver with a magnet yet!

   Now put the printed part it inside the nutdriver.
   You want to achieve a friction fit where the lower part (end without hole) slides in nearly without resistance.
   If you place it the other way, it should barely not fit. This end as a protrusion which provides the fit at the end.

   1. If is slides just in (and fall out again) → increase the X-Y-Contour compensation
   2. If you cant get it in → decrease the X-Y-Contour compensation

   Tipp: If you have inserted it and cant get it out of the nutdriver, use a wood-screw to screw it in a bit and pull it out. This is the reason why you should not test the fit with a magnet inserted!

4. If you have achieved the desired fit,
   1. press in the Magnet
   2. press in the printed part with the magnet facing away from the nutdriver handle.
      Use a big bit and press it in using the end (not the tip) bit.
      I used my drillpress to press it in

You may have to dial in the X-Y Hole/Contour compensation settings with a few tries (it took me 6 tries, including experimenting with arachne - i don't recommend using it here- and other settings).
The provided print profile was a perfect fit using sunlu pla.

If you cant get a satisfying fit, us a loose one and grab some glue.

DISCLAIMER:

This is not a replacement for proper electric equipment!

Im sure there are good reasons this is not offered in this way.

So be careful and use it at your own risk!