Septimaeus

Hmm I see. What I may have left out is that, since the goal is to use the prying leverage offered by the length of the shaft, the end you aim to free should remain as flat as possible while you apply that prying force.

One of the easiest ways to ensure this is to use body weight to keep that end flat on the ground. If that’s not possible or too difficult, you can alternate pressing down with one foot then the other, then rotate the shaft 45 degrees, repeating until it lets go.

This method uses the fact that a cylindrical friction fit tends to have one radial axis applying the most cumulative friction on the shaft. The prying force shifts the oppositional maximal friction points to a different axis, and the steady pulling force during that shift allows the collar to be incrementally extracted from the cylinder.

The key thing to bear in mind, however, is that these increments can be tiny, meaning you won’t get much if any perceptible feedback indicating progress as you proceed with the pry-pry-rotate-pry-pry-rotate cycles. But if you drew a line with a greasemarker on the outside edge of the exposed length beneath the collar, you will likely see the collar’s incremental extraction progress.

For many of these friction fit adjustable height chair and stool pedestals, I’d skip the rubber mallet and definitely skip hammers.

The easiest method is to place the flattest end between your feet and apply steady pulling pressure while gently rocking back and forth.

“Timaeus” if you’d prefer Tori Amos

What’s PDO?

Power Data Objects are sent by the device to the host (in this case your power supply) containing information about device capabilities and requirements.

The problem is that a laptop could be designed to /need/ PPS

This would be highly unusual, especially for a Dell workstation laptop. Some laptops can use PPS for better internal power efficiency and battery charging rate, but I know of none that require it. The feature is also leveraged far more often in small sealed devices where waste heat has basically nowhere to go, so if any device were to actually require it, I would look to small wearables. In fact, while I haven’t checked and don’t know, I’d wager many smart watch chargers are PPS enabled, which would explain their oversized connectors.

Isn’t that nonconformant?

Not to my knowledge. It has always been optional.

Why? PPS offers the most granular realtime PD adjustments of not only voltage (in tiny 20mV steps) but also of current delivery (at I think 50mA increments but don’t quote me). This is why it’s typically required by manufacturers for their fastest device charging speeds. PPS allows the most precise matching of power delivery to what BMS reports cells can absorb with little to no onboard power conditioning and minimal waste heat. It’s a premium rating beyond standard compliance.

A potentially interesting follow-up question, however, would be whether the laptop’s mainboard PDO tells you the laptop supports PPS, even though the power brick doesn’t.

I use LTO4 tapes.

• Bare LC drive eBay $~60. Pulled from a library so I had to switch the operation mode. Missing the bay door and kinda dinged up but worked.
• Celerity FC81en HBA card was $~30.
• 1.6TB tapes sold in packs of 5 around $11/tape. Probably can do better than that at higher volume.

Overall take: slow noisy writes but viable for cheap stable long-term storage.

Note: for each of the components above I set price alerts and waited. If in a hurry, maybe skip tape storage lol

Certain styles use a replaceable magnetic impeller that gradually loses its fins. Ours became noticeable at 4/6 fins and wouldn’t drain at all by 2/6 fins.

Reality of nude athletics: loins evolved to “gird” themselves in response to turbulence, and Greco-Romans saw a lot of athlete penis on TV.