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Laying Out Sink Base Cabinets for Plumbing Stubs
Question
Forum Responses
From contributor C: Measure, measure again! Just take your time and check your measurement. I drill holes larger than usual (so that it is a little easier to set the cabinet), not too large, but enough so that you can use a flange around the pipes. From contributor D: 1. Establish a plumb reference line at the edge of the sink base. In your case where the pipes are coming up through the bottom, establish a square line at the bottom edge. 2. Establish a level line at the top edge of the cabinet. In your case off the back wall assuming it's plumb. 3. From the back side of the cabinet lay out your holes using the distance off your reference lines. 4. Drill a 1/8" pilot hole from the back in the center of the holes. 5. Use these holes as a reference to drill the proper size holes from the front. Perfect job every time.
From contributor S: If you are totally paranoid, flip your cabinet upside down and glue four strips of wood into a template frame. Lay that on the floor and mark on the edge of the template where the pipes are using ticks on the side and back. Set that on the bottom of the box and transfer it all. Drill through the center of your holes with a small bit, as suggested, from the outside to the inside. Then drill with a hole saw from the inside to the outside. The small drill bit hole guides your hole saw, and drilling from the inside to the outside puts the chippy blow out on the outside where it doesn't show. If disaster strikes, you can skin the inside of a cabinet with a 1/4 piece of the same material and redo your holes, though it'd be worse on the bottom of a cabinet because you'd see the edges. From contributor B: Seems like a lot of fooling around to me. I'd notch out the entire area of the pipes and put a false back inside the cut area. The plumber can then drill his pipes into the false back and it will appear just like it was coming through the wall. From contributor M: I use a tube of cheap lipstick and put it on the ends of the pipes, push the cabinets to them, and cut accordingly. From contributor J: What happens if the pipes come out at an angle? From contributor M: Then I use linear algebra. Would you like to add information to this article? Interested in writing or submitting an article? Have a question about this article? Have you reviewed the related Knowledge Base areas below? 
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