Bunker Project - Air Pipe and Welding the Tiny Rack - 1375 

-Flux welding- With out a respirator in a confined space and no eye protection is just crazy man. Protip, Buy a angle grinder and remove paint first it will weld a lot better, paint covers up bad welds really well.

As someone who does a bit of welding from time to time, you might want to protect the eyes.

Hi Morten, sorry for the late reply, been away for a while and just catching up.... For nearly 30 years I've been in the bodyshop/car repair trade, I've welded more rear panels, quarter panels, front panels and chassis leg ends into vehicle than I can remember, my tips would be... mark out the area on the bunker roof where the rack rail meets the roof and then remove the right side of the server rack completely and grind the roof marked out area back to bare shiny/clean metal, then also remove all the coating from the server rack rail (powder coating) that meets the roof and drill 3 or 4 small 10mm holes in the edge that touches the roof, then cover both area's of bare metal with what we call in the trade a 'weld through primer' usually a zinc/copper spray primer as this will help stop corrosion (as the bunker has so much humidity this will help a lot), then use your magnets to hold the joints tightly together and plug weld through the 3 or 4 small holes filling the holes with weld, bonding the rack rail and roof together, once cooled grind off all the excess weld and spray with an etch primer (usually a light yellow coloured primer), this will form a base for your normal grey based primer, then coat with the white of the bunker colour.... great video as always chief 👏👏👍👍

An air compressor will dehumidify the air a bit (you'll get water in the tank). So if you have a thin hose and use the pressure reducer they often have you might be good to go. Or skip the fresh air and just have a dehumidifier and the same air all the time. You get fresh air in when the lid opens and you get in. The dehumidifier water can be pumped up to the lid or passed via a hose to the data center.

water is gonna get in around that pipe - you need an aquarium bulkhead seal for that

40mm blower and a dehumidifyer filter on the intake from the 40 mm blowerfan + you can run with the Vakuum a pullrobe for power and network

just as an idea. Install another pipe on the other side and install a PC fan (e.g. 120mm) on the inside of the bunker where the vent pipe is installed to draw air from the "data center" and push it out. There are vent pipes like those used for WW2 bunkers. The water can't get in but the air can go out. So you have an airflow from the data center that is pushed out by the fan. You can even use a small solar panel to generate the power for the fan. But the air should move a bit on its own if you have the pipes at different heights. It's good that you've installed the pipes from the data center so low. Due to physics, the warm air rises and starts to circulate.

Morten, I'm welding for 3 years now. There's no reason to weld without an automatic-helmet. They cost around 40€. If your eyes get burned by the strong UV-light, the damage is permanent! Don't do this ever again! Never! And by the way: gasless (flux)-Welding without a special filtering face-piece is a really bad idea - especially in such a small space below ground-level!

I suggest a BBQ blower fan it has a 32mm outlet and made to run a long time. Also can put a mini dehumidifier in the data center next to that blower. Another idea for those supports JB Weld works good for that ind of thing.

This looks nothing like Aliens. Do not disturb the eggs and all will be fine.

Welding works best metal to metal, so cleaning the paint off first would likely help. Also you need to seal the pipe hole as soon as possible as it will start to let water and dirt inside. For airflow you need a return to extract warm air. Don't think you need a pump, trickle flow through the pipe should be enough. 👍

Get a small dehumidifier (klarstein), which have a water pump which you can connect a narrow gauge drain pipe which can go through the air pipe you’ve installed. You won’t be able to get enough moisture out of the air otherwise? To be honest it’s a huge challenge climactic wise to keep it dry enough in that tank. The temperature changes and the metal surface and the server heat when sealed will create condensation unless the air is kept dry.

I think that you need a blower fan to push air thru a hose like that, or something that can pump air: en.wikipedia.org/wiki/Centrifugal_fan You will need to pump cold air into the bunker, as putting electronic equipment there will generate heat. Hot air can carry more moisture, and when it cools down against the cold metal walls it releases the moisture. That's what provokes condensation in the first place. Hot air is bad. You definitely don't want to pump hot air into the bunker. Or maybe install an air conditioning unit with dehumidification. Air won't be renewed in this way, but the same air will be refrigerated and dehumidified.

large aquarium air pump -- is food safe/clean --- non-aquarium pumps can give oil contaminates to the air

Dehumidifier with a lift pump to pump the moisture out of there to the garden or something. Wrap it in heat tape though so that it doesn't freeze during spring/fall.

I'll join with the popcorn safety gallery and mention that the best white paints are made with lead compounds.

Wait a moment... One pipe to get air in and out? Not possible because for that you need two pipes or an extra outlet. Bunker Technics ;-)

You coulds use an 80mm fan in the data center side to push the hot air through quicker and use an old laptop power band or another 12V adapter with a kick down buck converter, and to make sure the fan isn't running in full throttle, use some kind of fanspeed controller, all low voltage then for low energy consumption.

12:05 Do you think that it may be a 'good idea' to pour 5 or 6 inches of concrete, or less, into the hole before burying it with dirt? (Something to help seal it from water intrusion, etc.?) It may help to keep out water that may contain radioisotopes or other materials that you may not want. Ideally you would want to have a 4" to 6" outer pipe and then have your conduit inside of that, sealed at both ends with a few inches of concreted and sand in between (Sand is easy to remove with a shop vac if you need to service or replace and concrete will help to seal the ends. Perhaps that sounds too elaborate but you don't want anything getting in there and your connections to the outside world and entry point are actually the weak points in your bunker system. Just a thought....

Prime95 running on a Server with the at the back of the server problem solved 😁

It's not recommended to look at the welding spot without special dark glasses, and you even use regular glasses (magnifying?) could have even worse effect...

For you hopeful welders out there, don't do what he does. Seriously. At the very least, wear eye protection. UV radiation is no joke and will absolutely burn your retinas faster than you can blink your eyelids shut.

And Power + Network in Red Pipes 👍

Hi Morten, I would run the pipe to behind your Server Rack. That should be about as dry and warm as you can get. Then blow air down in with a fan. A server fan would be great, since they really blow. I guess you could just put it behind one of your 24/7 Servers... Don

i knew you were going to weld w/o the helmet!!

Måske en havelampe, pullert type (Nordlux Focus)

Don't eat anything down there, you may not be able to get out....

if you put some egg box foam on back wall it should help with echo

Drilling morten

Vinklemagnet - chuckle

How to go blind in one easy lesson 😀

👍

Morton plays Fallout 2024 🙂

Hi Morten, plaing with Minecraft? Verry cool your bunker.

Acoustic foam on the ceiling maybe

Shoulda sealed the conduit entry (caulk isn't enough). Physics over chemistry any day. 🤜🤛

several dehumidifiers

I bet your eyes are sore in the morning

buy welding safety equipment please. We do not want that you hurt you😊

Why are you welding with out a helmet!!! You'll damage your retinas.

17:46 Only two thoughts for your edification on the welding projects: 1) I'm not scolding you in any way so please don't take offense. Whatever you do don't look directly at what you are welding; you should, ideally, have a welders mask/helmet for this process because, as you are probably aware, you can be permanently blinded by the high intensity electromagnetic radiation (UV) emitted during the welding process. (UV will go straight through your eyelids and destroy the cells in your eyeballs so closing your eyes is of no help and may even simply give you a nasty case of sunburn on your eyelids, you need to use a welding helmet and if you see any kind of white light while welding then you should find some way to block it). Seriously, check your welding habits and a welders mask is worth the price of your vision, get a good one and keep it in a place where it will stay in good condition for a long time. 2) How safe are the fumes released by the welding system that you are using? A respirator may be a good idea or at least a fan or another flexible pipe with air blowing into the 'bunker' to help evacuate the fumes created, so that you aren't forced to breath any concentrated fumes in such a confined space. There may be a residue left on the inside surfaces as well... What say you? As always best regards.

Office carpet tiles tend to be fire retardant (for sound deadening) - know you don't read replies to your replies :)

Morten. Wear a welding helmet. Seriously. Get one.

WHAT??? Soldering in a confined space (arc soldering emits dangerous gases), without any eye/face protection, with no ventilation in order to remove the hazardous gases, with nobody to help you if you are injured and you have to exit in an emergency. DO NOT TRY THIS AT HOME. In my opinion, you should really consider removing the video; it is a very very bad example for hobbyists.

You coulds use an 80mm fan in the data center side to push the hot air through quicker and use an old laptop power band or another 12V adapter with a kick down buck converter, and to make sure the fan isn't running in full throttle, use some kind of fanspeed controller, all low voltage then for low energy consumption.