The stainless steel sink is dual bowl, with a garbage disposal (not
shown) connected to the right drain.
These two photos show the layout of the plumbing:
The center of the left bowl's drain was about 3/8" too close to the
entrance to the p-trap.
So I attempted to shorten the horizontal pipe from the output of the
90-degree elbow to the y-connection at the rear wall. I ended up with this:
Note the 1/16-1/8" inch gap at the output of the elbow. The item with
the bar code is a repair coupling. After priming and doping the pipes,
you slide it over the junction of the two pipes being joined. Obviously,
at the left end there is nothing for it to grab on to.
The repair coupling is 1.5" long. If it were, say, 1.0" I could probably
cut back the pipe it's on enough to allow gluing an short extension -
maybe with 1/2" visible - onto the output of the 90-degree elbow. Then
the coupling could slide over 1/2" of each pipe.
I'm horrible at cutting 1.5" PVC pipe with a hacksaw and getting square
cuts, so what I just suggested would be a challenge for me.
Can anyone think of a different approach?