It is a stainless steel nozzle, but the real problem is that it's not just the nozzle, it's either "hotend" with cooling ribs etc, with lots of fiddling to connect wires etc, or "complete hotend" that also comes with a fan so more of the wires are already connected.
I don't have problems with blind spots, so I don't have much incentive to change anything.
But I need to be able to see my own car (or at least very close to it) while reversing, and my car doesn't adjust the mirrors when going into reverse. Which means I have a big incentive to not use their idea.
Here in Denmark, it's legal to circumvent piracy protection, if the purpose is to legally use the product.
The example that was used in the media when this was new, is when you buy a DVD and want to play it on a PC instead of a DVD player. Usually piracy protection would stop it from working on a PC. Of course the circumvention also makes it easy to make and distribute a pirate copy.
So the ability to use the product in the way the customer choose (within reason), is weighted higher than stopping piracy a little.
Sorry for being inaccurate, I said "bulbs" but it's actually a mix of bulbs, spotlights and panels. I'm okay with any form factor that fits the situation.
That said, I haven't had any issues with bulbs. The shape is practical due to history, meaning there's a very wide selection of lamps etc.
For both bulbs and spots I tend to go with "several". I have very few places with just one bulb, it's usually 2, 3 or 4 bulbs in a lamp, and up to 9 spots. This means that they rarely need to go full power, and that should make them last longer. I haven't had any dying on me yet.
I don't know if this is exact enough, but I use IKEA switches and IKEA or other ZigBee bulbs.
The switches looks like a different brand of paddle switches. They work like "dumb" paddle switches as a starting point, and then you build smartness on top of that.
If you do it right, they also work when internet is down and your server is crashed. Actually this is how they work out of the box. (I think the bridge must be powered on, but if you don't have power...)
That's fine, but I'm opposite. When I moved to a different house, smart lighting was the first thing I did, requested by everyone in the family.
Just the fact the light switches are wireless and can be positioned wherever I want then is gold, specially in an older house where things has been moved around so much that the switches locations doesn't make sense anymore.
Specially in the bedrooms, kids and adults like that the magnetic buttons are movable.
Also, the family in the car leaving the house and I notice a light is on - I can just continue driving while we turn it off. And this is just remote control. Even smarter is when the house recognized that everybody left, and I get a notification that some stuff is still in, with a button to turn it off.
The hallway connecting almost every room on the floor has two switches. None of them are near a bedroom or a bathroom. Or in use. A motion sensor and schedule switches the lights between "almost off", "day" and "night". Nobody ever thinks about the light switches, nobody walks around in the darkness or gets blinded at night.
In the living room I have scenes for the TV area.
Teatime: Slightly dimmed light on the table, brighter light on the wall decorations.
Board games: Bright light on the table, slightly dimmed light on the walls.
Movie: No light on the table, very dim light on the walls. Increase brightness when the movie is paused.
Night: A single bulb on lowest setting, so that one kid can see that there's no monsters while walking by at night.
I guess that running power in a circle like that as fast as possible might heat up the battery, which reduces internal resistance, which increases battery voltage during load, which tricks the sensor that uses voltage to estimate charge.
It similar to when a fully charged but very cold car battery cannot start a car, as if the battery was discharged. Then you turn on the cars lights for a while, which to the cold batter is a significant load. The battery heats up, and then you can start the car.
3D printing is not as strong as injection molding the same material in the same shape.
But you can beef it up. You can 3D print stuff much bulkier than injection molding can do.
If you really want to, you can also use stronger materials.
Also, even the weakest cheapo stuff you can get is plenty strong for most stuff people are printing.
Knowing about what makes a part strong or weak helps a lot.