Works fine for 180g in my experience. I’ve probably flattened 100 records. Not every record will flatten fully and in some cases the album may be damaged (happened twice to me) but I think if the Orb can’t do it then probably nothing can.
I think the Air Tight and the Orb are the same machine. I had an Air Tight and flattened well over 1000 records, almost all dish warps. After I sold my collection, I sold the Air Tight to a friend. Larry