Please house, is there any household appliance that can be used to grind bean and pepper into perfect smoothness.

I have tried several electric blenders, none of them can blend/grind stew ingredients into perfect smoothness.

I am tired of having to go outside to find grinding machine. Apart from the stress, those machines are dirty.

I hardly grind beans bit when I do, I find that soaking it overnight makes it easy to grind and it comes out smooth. I do blend with the skin on. Pick to remove stones and dirt and soak it overnight with the skin on.
As for stew ingredient, I dont like mine to be smooth.

I think century blender is good. But it doesn't also blend into smooth perfection. Any other ideas? I have heard of some manual grinder used at home too.