alt.hn

6/27/2026 at 11:45:45 PM

I Build a 10 Inch Mini Rack from Aluminium Extrusions

 https://louwrentius.com/i-build-a-10-inch-mini-rack-from-aluminium-extrusions.html

by louwrentius

6/28/2026 at 4:33:26 AM

Why use the original power bricks, with the space claim and awful routing, instead of just going to a single dc/dc... either directly if no individual power control is needed, or to a relay block or switch block if automated / manual individual control is needed?

by addaon

6/28/2026 at 4:49:21 AM

I haven’t found a solution for a single DC power supply I can connect to the systems. Maybe I have to solder something together myself.

by louwrentius

6/28/2026 at 2:45:14 PM

Meanwell is the standard answer for this sort of thing; something in the SD-500 family or sized/optioned as you need. You'll have to do the connectors yourself; you may be able to find junction-post-to-barrel-plug leads of the right size and length off the shelf, but I'd be surprised, and soldering them would take less time than shopping for them.

by addaon

6/28/2026 at 7:46:17 AM

It would be cool to design custom aluminum brackets for the fans. However I found that although ordering 3D prints is very cheap, using (for example) PCBWay for CNCing something out of aluminum is very expensive.

by bartvk

6/28/2026 at 12:50:32 AM

This looks good: I've got three HP NUCs like in TFA + three Pi on my desk (got more than that altogether) and it's indeed a cable mess.

> Aluminium extrusions are bars with a groove on all four sides. These bars have a standard format and you can slide all kinds of equipment in there and lock it in place with set screws. It seems to be used a lot for home made 3D printers, CNC machines and whatnot.

They're also called "T-slot" and 80/20 (from the brand).

https://en.wikipedia.org/wiki/T-slot_structural_framing

Plenty of free 3D models for tiny parts for those that can be printed at home (careful though: most won't hold much weight).

by TacticalCoder

6/28/2026 at 4:19:57 AM

Awww, its so adorable

by localdeclan