My neighbor saw my recent attempts at hollow forms and has asked me to make some pet urns for one of her relatives. I've heard of people making them but have no idea if there is anything special or unique to consider. If I turn it green how do I fit a lid on a non round opening that will seal? Do you only turn them from dry material? Twice turn so you can true up the opening? Anything special on the inside to be done? Growing up in the country, pet urns are not something I know anything about. I've looked at images online and wow, they can be very elaborate and ornate.