Linsensuppe

What is your experience with cheap knives from amazon or others? There are a lot of sub $50 knives there with mostly positive reviews. Are they actually good? Or do you have better cheap options that are not sponsored by amazon? I see brands on there like Lothar or Bergkvist. They actually have decent websites on their own, so I don't know if they are actually that amazon trash or a decent budget brand.

I want to mount a printed part to a standard 2mm motor axis which doesn't have any dents or profile. Its just round. If I print at exactly 2mm, it fits for the first few times until it gets too lose and the spinning part sometimes falls off.

I am trying to send an email from an alias with simplelogin. I went to their website and clicked the contact link, but after sending the email, I looked in the headers and saw my real email with my real name. Is this on my side or can the recipient also see my real name? If so, how to turn this off?

I am using the Creality ender 3 v3 SE with eSuns PLA+ in black. The recommended printing temperature is 205-220 and I am printing at 210. The bed is set to 65°. When I print somewhat flat parts. The edges warp off the plate, while the printer is running and the plate is still hot. Until a few days ago it worked perfectly and I don't know what I am doing different.

It is always only the first few layers, and the print never moves, so that the printer would make spaghetti, its just the edges that lift of a few millimeters.

I am thinking about buying a home server for a wide range of things. I found some cheap old computers on amazon for around 80-90€. Is it worth it to upgrade them with another stick of ram or a larger SSD? 2 8gb RAM sticks are only around 15€, so that would be 100 in total. But my question is, is it worth it, or is the CPU the limiting factor. Some of them have one from the pentium series. Also, is 15€ for 2x8gb DDR4 RAM normal (not too cheap)? Maybe you have other ideas for a cheap home server. In my case I don't think a 90€ raspberry pi is worth it

Im considering buying a new phone and i don't really consider a Pixel. I really like Fairphones approach, with the self repairable stuff. Even though they don‘t have a headphone jack. But well… I can’t change it. I’ll definitely go with the adapter over wireless headphones.

But to my question: What private OSes are there? Fairphone sells FP4s with eOS, how is that? And does it work on the FP5? GrapheneOS only works on Google Pixels right?

Ive looked around a bit for cheap cameras from sony‘s alpha 7 series and found some 3‘s with the kit lens for less than 500€ or the 4 with lens for around 600€. Are they legit or are they scams/fakes/not working? Whats your advice or experience? On other platforms for used stuff they rarely go below 800 without a kit lens

Is there something similar to privacy.com in Europe so I don’t have to enter my credit card information everywhere? Or another way to buy stuff online privately on many different stores and websites?