Id on't see address of a tutorial or any image ?

else no problem to make an Inset + groove with your file...



And yes only faces selection will work! :)

for the external faces, try to avoid to have "generic" curves on the Diff boolean result!
So rotate the sphere at the beginning... (rotation not shown here)

if you have to make the 2 faces Insert make them one by one!

if you have enough material you can repeat the process
... and or decrease the measures!

Yep this one! ;)





No specific problem!
As you see the generic curve of the sphere don't interefere with the volumes
so boolean & Insert are possible easily!

- The trick is to click on a "Face(s)" and not on "Solid(s)"! (otherwise the function Insert won't work)
- here "Inward" + "Groove" on the top face!
- Union of Top & Bottom Solids
- then Shell on top and Fillet on some edges!

Boolean Diff (Native tools)



For The X, Y, Z tools Show me a name, an address or an image of something...! :)

So...the all detailed process...
the only difficulty is to click for select Face and not Solid as said previously! ;)

If something is not clear don't hesitate! :)



Ps it's a good thing to put the objects above the gride and not outside on the empty space! ;)

So with the Free Alpaca! :) (100 free images by day )



Here i take this image as Style ;)
You can take only one image as style in free ...but you can take image after one for a render ;)

so... etc...

It's free and Online! https://www.alpacaml.com
100 images free /days... i use quasi all in free! ;)
Very easy! :)

I have a little page about it! :)
https://moiscript.weebly.com/alpaca.html

They have also a free classical 2D prog (local) but you can yet make quasi anything you want with the above! :)
https://firealpaca.com/

Moi's Tuto = 20 second
each Image = 5 seconds!
yes it's magical! ;)

times in seconds is the total time for make the tutotorial
and then for make an image!
And yes Alpaca is free for 100 images every day!

so 20 +5 = 25 seconds for make the first image
then 5 seconds for make any more image from the first one! ;)

Example with another one free one Ai Vizcom! ;)
https://www.vizcom.ai
(with the same Moi3D tutorial)

if you have any problems with these 2 free Ai above or others inside my meminder don't hesitate! ;)

https://moiscript.weebly.com/stable-diffusion.html