Those won’t go away with sanding unless you go really deep
And personally for a prototype sanding is a waste of time. Get something working as you expect, then roughly design a case, iterate the case, finalize the case design, then finally worry about surface finish.
Those are grip enhancement surface features.
Actually, those are speed lines. It makes you type faster.
No, around the keyboard.
You mean the small gaps in the filament?
Those won’t go away with sanding unless you go really deep
And personally for a prototype sanding is a waste of time. Get something working as you expect, then roughly design a case, iterate the case, finalize the case design, then finally worry about surface finish.
What the other person said. This is a prototype and looks to be printed with thicker layers than normal (.2mm is the usual.) to save time.