Enclosure MS-Tech CI-70 (3.44 L mini-itx case)

FrankTL

Cable Smoosher
Original poster
Dec 17, 2024
11
8
I've had this case for about 10 years, love the brushed aluminium look and even got a second one from kleinanzeigen.de (as it no longer seems to be produced).
Here's a generic picture (plenty of detailed pictures can be found through a web search):

This case comes in two versions; the first version (the only model I own) with front USB2 ports, and an updated version that has front USB3 ports.
Depending on the CPU heatsink height you use, you can fit up to two 2.5" drives in caddies in this case.
It comes with a dodgy-looking 12V 60W external power brick and ships with picu-PSU style daughterboard to convert 12v to ATX + molex for extra drives. I don't trust the quality of these components nor do I want to be limited by their low capacity, and rely on motherboards that do the DC-DC conversion.

One build from about 10 years ago is around an Intel C2750 server cpu, the other build has an AMD Ryzen 8600G (running with 35W CPU profile) coupled with a Thermaltake AXP90-X47 heatsinkfan.

I am running into an obvious problem if you look at the picture - while the AXP90-X47 with stock fan fits exactly in the available height, the holes in the 3mm aluminium shell don't provide nearly enough airflow to effectively cool the CPU.

With the case's top off, running stress-ng for 10 minutes the CPU tops out at 50C while the CPU fan remains inaudible.
With the top on, running the same stress-ng test causes the CPU fan to spin up to become quite noisy, and the CPU goes to 65C

Obviously I'd like the build to be silent, so I'm in search for an aesthetically pleasing solution.
Here's what I've come up with as options:

- Find a laser cutter service that can cut 3mm aluminium, and ask them to perforate the top of the case with many more holes similar in shape and spacing as the existing holes.
- Buy a large metal mesh sheet, something similar to what's on the InWin Chopin case, and fold it to replace the aluminium cover. It should be thick enough to not be dented by small forces, but flexible enough to allow being folded without requiring industry-grade equipment.

I'll check what laser cutter services charge, but fear that this option will be quite expensive as I'll need probably an hour of some expert's time to set up the cutting pattern and use the laser cutter.
 

Phuncz

Lord of the Boards
SFFn Staff
May 9, 2015
6,071
5,006
I would consider just going the easy route: keep the existing panel and fabricate a new one.
Find one that is already perforated (local hardware store, Amazon, etc.), find something that has the exact radius that you can bend it over. An option is to use a PVC pipe. Both shouldn't cost you very much and if the fit is good, you can get it powder coated or spray paint it yourself. If these cases are non-existant anymore, I would advise against modifying the existing panel, unless you can get it done professionally. But that will probably cost a lot more than a similar new case.
 

hrh_ginsterbusch

King of Cable Management
Silver Supporter
Nov 18, 2021
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- Find a laser cutter service that can cut 3mm aluminium, and ask them to perforate the top of the case with many more holes similar in shape and spacing as the existing holes.
As @Phuncz already suggested: Fabricate a new one - so, find a laser cutting service and let them create a new panel from the start.

Because you mentioned kleinanzeigen.de, I'd guess you're from Germany, so these guys might be of help: https://www.laserteile4you.de/ (has been suggested by several people so far)

cu, w0lf.
 
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FrankTL

Cable Smoosher
Original poster
Dec 17, 2024
11
8
Results after about 4-5 hours of work on the metal mesh (mostly folding it and cutting with a Dremel).

I'm reasonably happy with the aesthetics as I have no prior experience with working sheet metal.
It's not 100% finished, as I didn't take care of nuts to screw it to the case - I read that it's a waste of effort to try and solder the steel nuts and that they should be welded, and I currently don't have the equipment to do that.
My main worry at this point is the 3mm by 5mm diamond shape holes in combination with the 0.7mm steel wire - I'm guessing that using this cover is not going to be much different from running without a cover at all, regarding containing unwanted/undesired electromagnetic noise generated by the computer.
 

hrh_ginsterbusch

King of Cable Management
Silver Supporter
Nov 18, 2021
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wp-devil.com
My main worry at this point is the 3mm by 5mm diamond shape holes in combination with the 0.7mm steel wire - I'm guessing that using this cover is not going to be much different from running without a cover at all, regarding containing unwanted/undesired electromagnetic noise generated by the computer.

You still can fine-tune the fan curve or replace the fan with the noctua NF-A9 slim variant.

Another option might be: Try getting a 120 mm fan adapter for the AXP90-X47, which allows for more air intake, thus lower noise.
Some of these are available on Etsy, but there also are some 3d printable options.

I'd go either with a slim NF-A12x15 for improved noise levels, or pick the Silverstone Air Slimmer 120, which got more headroom than the Noctua fan, and fine-tune the fan curve so it doesnt annoy you under regular load.

cu, w0lf.
 

Phuncz

Lord of the Boards
SFFn Staff
May 9, 2015
6,071
5,006
It looks very well done, the result is very good ! Electromagnetic noise shouldn't be a problem I'd guess. I'd skip screwing it down and look at perhaps use magnets. If the material is magnetic, just using some strong magnets with screw holes might be a good choice. Or whatever works in the build.