Pet Waterer Soda Bottle

Should work with any standard Coke and Pepsi style bottle thread. 

Can be used as just the bowl, with legs, without legs, with railing or without railing.

I made the foot and railing to rise it up from the sawdust under the geese, and to discourage them from jumping into it.

FOR A WATER TIGHT BOWL: (Not the one and only way, but i find this works really well.)

• Do at least 3 perimeters on any wall holding water. I use 4. It's fine if it gets to have a little weight in it.
• Don't use cooling fan. Except for the overhangs.
• 0.08 layer height
  - You want a slow and hot fusion of your layers.
   

I recommend printing this in PETG 
The railing in my pictures, hass been “welded” onto the bowl, using a 3D pen. But it snaps on pretty tight without any help.

The bottle in my example models, is 110mm in diameter, at the rim of the railing. The bottle in most of my pictures is a standard 1,5L Coca Cola bottle.

I added a hole to the design by @sonderjul, and incorporated the result into the bowl of this design.