Comment on Making a custom pc case for my next home server
cmnybo@discuss.tchncs.de 7 months ago
Are those mechanical hard drives? If so, I would want a fan moving air across them. Also keep in mind that most filament is not ESD safe.
The openings under then and the spacing between them is to allow air to be pulled through them.
I was concerned about the filament and ESD too but have been told the motherboard would just ground out to the PSU through the power connector and not to worry about it. Since the hard drives are also connected I figured they would ground out the way too. There is ESD safe filament I could use for the drive cage though.
Just looking to learn, who told you that?
I don’t know, someone online, I remember arguing the exact same thing about 3-D printed computer case is being a bad idea because of static concerns,but I was basically mauled in the comment section for it
Check out: www.youtube.com/watch?v=nXkgbmr3dRA
Oof, moving plastic filament rubbing on plastic guides. Sounds like static waiting to happen.
I never thought of that.
I don’t know much about static electricity and plastic, but would it be sufficient to ground off an arbitrary point in the case to the body of the PSU?
I’d recommend using conductive filament if you can or even just coating it with conductive paint before it touches anything electrically sensitive might do the trick. It doesn’t have to be a great conductor, just a tiny bit of conductivity will prevent any significant static charges from building up.
It would not. Static electricity in insulators such as plastic is localized. It can’t move across the plastic to the grounding point.
muusemuuse@sh.itjust.works 7 months ago
I wonder if I put chicken wire against the inner walls and run that to the case of the power supply would that work well enough?
cmnybo@discuss.tchncs.de 7 months ago
You can get conductive paint for RFI shielding. It’s very conductive, so make sure that the case can’t come in contact with any circuit boards or it will short out. Make sure the paint is compatible with the type of plastic you print the case out of too.
They also make ESD safe filament, but it’s $150+ a roll.
muusemuuse@sh.itjust.works 7 months ago
The paint sounds promising. It just needs to stick to ASA. I’m not sanding anything either so it’s not flat but that might be a good thing to increase surface area for the paint to bind to.