New modeling tutorial is on Youtube!

something like that :

That was a great way to do it!

#1- I would model 1/8 + mirror +aray with 90' rotation #2- You don't have to add destructive bevel you can select edges You want bevel and ad weight or simply ad crease to them so subsurf modifier don't distort them !

At first I saw this and wasn't impressed but then I saw you did it in Blender, of all things. Would genuinely recommend a real CAD program for things like this, especially if you'll want to modify dimensions later.

Polygon modeling has its own place, and CAD modeling has its own place, I am doing these to practice topology.

Next time, try MACHIN3tool with a non-destructive workflow. You only need a quarter of the model, not a full polygon model.

Is this for 3d printing? I dont understand the purpose of this modeling technique

This is polygon modeling, the purpose is not engineering or printing. These models are for visualization like games, animation etc.

For a game it just seems like unnecessary details but what do i know, im not triple A