I found them on maker world for 3D printing.That setup looks very good.
Can you tell us where you got the stand(s) from?
Very true but you would just switch the way the dock sat on your desk to have the OWC drive face the front of your M4 instead of near the intake.Well, in my opinion either the NVMe disk (a big heatsink actually) and the Mini are meant to be placed horizontally. But ... if I needed them vertically I would place the Mini on the left and the disk on the right side.
Now (as they are placed on the picture) the disk affects the airflow for the Mini's intake. Also the Mini directly sucks part of the hot air from the heatsink.
Warm air goes up, and that direction is due to gravity. I wouldn't call that negligible.Gravity force on air is negligible on this scale.
If the device depended on convection cooling, sure, then you are right. The fan in Mini spins at least 1000 rpm (at least that is min my will allow) and in that case convection is negligible and gravity force will have no impact. We are talking about forced air cooling (1-2W? fan) compared to difference in air density at height difference of max 4 inches. Let's be real here...Warm air goes up, and that direction is due to gravity. I wouldn't call that negligible.
I'd say the slower the fan is turning, or if it is off, the more of a difference will it make. It will affect heat flow in the case. Whether it's detrimental or beneficial is anyone's guess. Since Apple doesn't warn against it (or do they?), it should be more or less fine.
PC cases used to have the PSU at the top above the CPU, and the design was changed to have them at the bottom, at least in part for thermal management reasons, despite both the PSU and the CPU being cooled by fans. And I have a mini PC where I do observe a different heat distribution depending on how I orient it.If the device depended on convection cooling, sure, then you are right. The fan in Mini spins at least 1000 rpm (at least that is min my will allow) and in that case convection is negligible and gravity force will have no impact. We are talking about forced air cooling (1-2W? fan) compared to difference in air density at height difference of max 4 inches. Let's be real here...