This post is part of the Home network v2 series.

We recently got a family computer in our play room, and it of course needs network. So I ran a 20 mm conduit from the basement, through the kitchen, to the play room, and pulled two CAT6 cables.

Table of contents

The plan

My home office is directly below the kitchen, and the kitchen shares a wall with the play room. So I figured I’d run a conduit through the ceiling in my home office, come out under the kitchen base cabinets, and through the wall to the play room.

Floor layout of the 1st floor, conduit marked in red

No visible cables, easy as pie… Well, not so easy it turned out. But let’s get back to that later.

Power cable from basement, exiting under the kitchen base cabinets

There is already a power cable going through from the basement to the kitchen, so I used this as a reference to know where to drill. As there are water and drain pipes in this area — knowing where the drill would come out was important.

Ceiling in the home office

The kitchen and play room shares a wall, going through it; I would come out in a closet on the play room side.

Inside the closet on the play room

After doing a lot of measurements, using the power cable and pipes as a reference — I was finally ready to get started 🙂


Drilling 73 mm hole

I first cut a 73 mm hole on the play room side, to fit the multi box. Drilling into the unknown always stresses me out — but the stud finder didn’t indicate any metals or power 👍

Measuring the depth

I then used a screw driver to measure the depth to the kitchen wall; it was 12.5 cm.

New hole in the kitchen floor tiles

Next I drilled from the home office, with a 10 mm drill bit. I switched to a masonry bit when I hit the underside of the floor tile, but it didn’t want to go through. Probably not the greatest masonry bit…

After trying for a while I got a hammer and hit the underside of the drill bit a few times, that did the trick and I got through the tile 🙂

22 mm hole in home office ceiling

The 10 mm pilot hole was just to get the position where the drill would go through, on the kitchen side. I used a 22 mm drill bit to widen the hole from the basement, but it wasn’t long enough to get all the way through.

Conduit through kitchen wall

While I waited for some new tools; I drilled through from the play room to the kitchen, in a slightly downward angle to make sure I didn’t end up inside the cabinet.

Dremel 4000, with accessories

My new rotary tool arrived 😃 The plan was to use a diamond cutting blade to get a big enough opening in the floor tiles. Those tiles are rock hard, and there wasn’t a lot of room to work with under the base cabinets.

Dremel with diamond cutting blade

Using the diamond cutting blade; I was able to cut out a section of the floor tile 🙂

Cut out section of floor tile

I borrowed a 22 mm drill bit, that was long enough to get through. I made good progress for a little while…

Completely ruined drill bit

…and then I hit something. I didn’t understand what, but it was obvious that I had hit something — the drill bit was completely ruined. And I didn’t make it through 😞

Larger cut out section of floor tile

Looking through the half-finished hole, from the basement; it looked like the 22 mm drill bit had deviated from my 10 mm pilot hole. So I widened the opening in the kitchen floor tile. And while doing so; I found what I had hit:


A screw! 🤬 Under the floor tiles; there is plasterboard, held down by screws. And I hit one of them… That is just bad luck. Luckily — I was actually able to unscrew it.

Formwork twist drill bit

I ordered a formwork twist drill bit, they can get through nails, metals, and all kind of things 🙂 It took about a week to arrive — and, with the screw gone, easily made it through 🥳

Final cut out section of floor tile

I had to widen the opening in the floor tile just a bit more… Ready for the conduit 😃

The conduit

PVC pipe sticking out of kitchen floor

To get the flexible conduit through; I inserted a 16 mm PVC pipe from the basement, duck-taped the conduit to it, and pushed it down.

Flexible conduit through

That guided the flexible conduit through, making sure it hit the hole in the basement ceiling.

Conduit going from play room to the basement

Next I installed the ELKO multi box in the 73 mm opening on the play room side.

Multi box in play room wall

The cables

CAT6 cables in conduit

I measured the approximate length of CAT6 cable I would need, being generous, and cut a length from the spool. Then I pushed both cables through from the play room. It’s always easier to work with gravity 🙂

Conduit along basement ceiling

After the cables were through; I fastened the conduit to the ceiling in my home office.

Conduit ending

Ending them right by the homelab patch panel 🙂

Terminating and testing CAT6

I terminated both ends of the CAT6 cables with tool-free keystone jacks. And made sure it was good; using a Fluke MikroScanner 🙂

Mounting wall plate

Then I clicked both keystone jacks into the ELKO wall plate, and pushed the additional length of cable back into the conduit.

Keystone wall plate with two keystone jacks

And viola! Two CAT6 network outlets complete 😃

Keystone jacks in patch panel

On the home office end; I clicked the keystone jacks into my patch panel.


Outlet with angled patch cable

I used a patch cable with an angled RJ45 connector — it would have been ideal if it was angled the other way! Oh well, no one is going to see it inside the closet. And the low profile makes it less likely to be damaged by the jackets hanging in front of it.

My youngest sun playing GCompris

While working on the network run; I used a TP-Link TL-WR802N as a wireless client. Just to get the computer up and running.

Proverb: If it can be wired, it should be wired 🙂

The install took three weeks from start to finish. But I took my time, measuring, planning, measuring again, and waiting for new parts and tools 🖖

Last commit 2024-04-05, with message: Tag cleanup.

Home network v2 series

  1. Replacing Unifi switches with MikroTik
  2. Getting started with MikroTik CCR1009 and RouterOS
  3. Altibox fiber — straight into Mikrotik CCR1009
  4. Running underground CAT6 to detached garage
  5. Plans for my home network
  6. Running two CAT6 cables to the play room
  7. Running three CAT6 cables to the living room TV bench
  8. Moving CAT6 cable for access point; inside the wall
  9. Altibox fiber — straight into Ubiquiti EdgeRouter
  10. Two CAT6 cables and a fiber — from the basement to the attic
  11. A few Wi-Fi improvements
  12. Updated plans for my home network
  13. Knot Resolver — with ad blocking
  14. Pulling CAT6 cable in existing conduit
  15. Running CAT6 to the twins' rooms — inside interior wall
  16. Running CAT6 to the 2nd floor den — another interior wall