Yes, I realize that. I meant here on the Houzz site - or perhaps on the IKEA Hacker's site. It would be great to see exactly how to adjust the non-apron sink cabinet to fit an apron sink. We have to do it nonetheless, so I might take pictures and post if I can't find anything else. Our sink is not as heavy as the 30" sink inserted into into a 30" cabinet, so the framing requirements should not be as stringent. Plus, the methodology there was to combine two cabinets together.

this is a gorgeous kitchen! More on India ink as stain: I've used it on furniture a lot. Be SURE you get permanent India ink. It has some shellac in it to make it more waterproof. It has amazing coverage. I have done an entire armchair frame with only an ounce or two. It's also very messy if you drip it, so wear old clothes and get some disposable latex gloves. It may raise the grain on some woods. Sand the wood smooth before applying it, then do a very light sanding after it's completely dry, if it feels at all rough. Apply a second coat if the sanding removes any of the color. The color is a warm black. It's opaque but the grain of the wood will show through, unlike with paint. It's a pretty unique finish. I have never used Waterlox over my ink finishes, since they were furniture. I think you do need something though--the finish doesn't seem to be super permanent even though the ink is labeled permanent. (That's more for when it's used on paper, not furniture or counters that get a lot of wear and tear.) I used beeswax on the furniture which seemed to seal the ink pretty well. I don't think I would use it on wooden chair seats, though. Too much risk of rubbing off on clothing down the road.

But it still sticks out in the front, even undermounted, so if the cabinet is not wide enough it will interfere with the doors/drawers on the adjoining cabinets, whether under- or over-mounted. With a normal undermount sink, the sink bowl sits back a bit from the front of the cabinet so you just scoop the hidden sides of an adjoining cabinet and the face/door isn't involved at all.

@ Susan... thats really a shame, I'm so sorry you returned it. Did you see the link I previously posted in this thread? Our sink is a Kohler Whitehaven 36" (also an undermount and its literally 150 lbs), the sink needs supports built for it like the link I provided above. Its currently sitting in my IKEA farmhouse cabinet base and my countertops are scheduled to be installed next week. So I'm confused as to why they told you that. Do you have a picture of the Rohl sink? I'm curious to see why the countertop installers said it couldn't be done. Did you go back and talk to cabinet people? I'm sorry to ask so many questions its just that it seems like you got some shady news from some lazy countertop installers.