stupid walls

    minetest.register_node(wall_name .. "_filler", {
        description = wall_desc,
        paramtype = "light",
        --paramtype2 = "facedir",
        is_ground_content = false,
        tiles = { wall_texture, },
        walkable = true,
        groups = { cracky = 3, wall = 1, stone = 2 },
        sounds = wall_sounds,
        drawtype = "nodebox",
        node_box = {
            type = "connected",
            fixed = {{-3/16, -1/2, -3/16, 3/16, 3/8, 3/16}},
            connect_top = {{-1/2, -1/2, -3/16, 1/2, 1/2, 3/16}},
            connect_front = {{-1/2, -1/2, -3/16, 1/2, 3/8, 3/16}},
                --{-3/16, -1/2, -1/2, 3/16, 3/8, 1/2}},
            connect_left = {{-1/2, -1/2, -3/16, 1/2, 3/8, 3/16}},
                --{-3/16, -1/2, -1/2, 3/16, 3/8, 1/2}},
            connect_back = {{-1/2, -1/2, -3/16, 1/2, 3/8, 3/16}},
                --{-3/16, -1/2, -1/2, 3/16, 3/8, 1/2}},
            connect_right = {{-1/2, -1/2, -3/16, 1/2, 3/8, 3/16}},
                --{-3/16, -1/2, -1/2, 3/16, 3/8, 1/2}},
        },
        connects_to = {"group:wall", "group:stone", "group:fence"},
    })