My sewer drain was just a piece of non-threaded PVC pipe. This allowed me to use my 90 degree elbow to get a nice tight fit so I didn't need to use a board and a rock anymore to keep it in place.
One modification I had to make to my original 90 degree fitting however was I had to remove the black swivel piece as you can see in the picture (not removed yet in the picture). With the black piece gone it was a much tighter fit.
My sewer drain was just a piece of non-threaded PVC pipe. This allowed me to use my 90 degree elbow to get a nice tight fit so I didn't need to use a board and a rock anymore to keep it in place.
One modification I had to make to my original 90 degree fitting however was I had to remove the black swivel piece as you can see in the picture (not removed yet in the picture). With the black piece gone it was a much tighter fit.