Those are the lazy people. Lazy people refuse to learn new things. You don’t sound lazy.

Don’t be like them. Hang out with those people that piss excellence.

As an old toolmaker who might have dabbled in accuracy. I just shake my head when people complain about things like this because they think absolute accuracy --an impossibility-- is the important thing, (you can’t afford anything close absolute accuracy), when it’s repeatability that matters the most. Choose the one that repeats the best, toss the rest. Then learn what the “magic number” is that makes you happy to read and need to get the results you are looking for. Learn to apply some bloody “windage”.

Remember: Rick Sanchez is a dumb-ass. And you only need to be 5% smarter than the tool you are using to be successful. So be smarter than the tool and understand the process.

You are looking for perfect here where you probably should be looking for “good enough”. You will never build a chamber insulated well enough to hold temperature for hours or even perhaps a 24hours+ without cooling. Plus, you are never going to build a perfect vacuum chamber to prevent fresh air leakage or venting air the hot air into the room and that will also add to the cooling effect. If you have ANY opening or seam, there will be leakage.

Now consider just how big and bulky such an enclosure would need to be with the materials that a commonly available to you that you can afford. Is it really worth it for the small gain in finished product? Even manufacturers of high end printers accept the they will only get ‘good enough’ and that they need to have the heater cycle on and off to keep a steady temperature.

As a “boomer” myself, I do know the secret of the ‘right click: Save as’. Who do you think thought up the idea-- that’s right, a Boomer. And we taught Gen X about it. Not my fault they didn’t pass on the ancient and now arcane knowledge to future generations. But I suppose you need to know how to use a mouse before you can right click anything. Having attempted to teach 3D CAD to high school students, my first job was to show them how to use a mouse and why fingers and CAD don’t mix. And do it before we could actually move on to the subject matter they were supposed to be learning.

Still I do use an app for rotate my backgrounds and quotes. The app Variety works well with KDE Plasma with a large selection of repositories to choose from with beautiful backgrounds without taking up extra space on my drives. But what do I know, I’m just a boomer.

You just want to be angry and complain about something don’t you. Either get over it and learn to use FreeCAD or don’t. But whinging is unproductive and useless.

Why does it surprise you much that FreeCAD isn’t like SW? And why do you think it should be?

Oddly, despite the 1,000’s of hours of SW myself, I had little difficulty in picking up FreeCAD. Or Fusion or OnShape, (even taught OnShape to high school students), or SolidEdge. Once you understand the design process of CAD, it’s not all that hard. I do have preferences in UI’s and workflows, but that doesn’t mean I can’t use something different.