Running Cable Vertically Down a Wall with Mineral Wool Insulation under Plasterboard

Hello.

I have a technical problem of this type. I would like to run the cable along the wall (vertically down) under the plasterboard, but the problem is that the wall (5 cm wide) is filled with mineral wool at the butt joint. I have a hole for the box made and now it is a matter of leading the cable down (about 1.5 m). Apart from mineral wool, there are no other obstacles, such as metal profiles, etc.
Therefore, my question is as follows. How to make a hole in the mineral wool along the length of the drywall for the cable routing?
I tried with two neodymium magnets (with a tied string on one) but their power is too weak to attract each other. The wall is 2.5 cm wide. Plasterboard and chipboard underneath.

Regards.

The fastest method is the so-called CKM.
Holes spaced to allow the cable to be pushed through that distance.
Later, just puttying holes, sanding and painting.

If you have two holes, you can use, for example, a cable tray closure (it is flexible, after inserting it into one of the holes, press the inside with your fingers to press it against the inner wall).

You can try to insert a stiff wire that will easily pave its way, and then with this wire you pull on a strong string and then the wire.

Ok, I did more or less :)

I did the so-called hook made of 18mm chipboard trim. I glued the bent tip to make a "teaspoon" through which I can cut through the wool and pull it out a little bit. Already more than 1 meter behind me. A hole in the wool from 4-5 cm came out, also there is nothing like makeshift :)

PS. I've already tried the wire. There is then a problem with bending such a wire in the hole. This finishing is flexible only in one plane, also a good patent for bending in narrow gaps :)

Regards.

rafles wrote:

. I've already tried the wire. There is then a problem with bending such a wire in the hole.

You took a thick wire, a wire was used to pull the wires into a conduit, a thin but sufficiently stiff steel wire, in your case it would also "work".