We installed a 33" cast iron sink in a 35" sink base. The sink was specified for a 36" cabinet. We used Pete's Sink Mount, which was perfect because we would have never been able to attach the 2x4s supports as is recommended by Kohler, because there wasn't enough room in the smaller cabinet. We had a tough time mounting the DW drain hose up high along the side of the sink, any tighter and we would have had to cut into the sides of the cabinet. We don't have a disposal, just wanted to let you know that you may encounter other issues with a smaller sink base.

My architect has given us a 33” cabinet instead of the 36”

Ask your architect for a larger cabinet.

What is an architect doing designing a kitchen anyway? Most don’t even know how to make toast. You need a Kitchen Designer. Because no, that will not work with the diameter of a decent quality disposal.

We did a 32-inch cabinet with a 30-inch single bowl stainless undermount with back right corner drain at my daughter's house. Used the compact Insinkerator garbage disposal and a RAS trash/recycle pullout. Works great.

Beautiful kitchen, Minnesota Mary! I’ll look into a compact disposal. I had not heard of that. PPF., the architect says a bigger cabinet will not fit, which I don’t understand because we currently have a 36” cabinet in the same space. I asked him about it and he seemed sure. Verbo, in truth the Houzz kitchen forum designed my kitchen. It is just a remodel, so we are not starting from scratch. Except for the fridge, each appliance is staying where it currently is and it has worked well for us. I came up with a design/layout with feedback from the forum and went to him with it before he started drawing. Thanks for the responses, everyone!

Oops, missed your comment somehow, teresa21. I did specify a Pete’s sink mount, but I will have to look into the DW hose issue.

Also, Verbo, we have an architect doing this because we are taking out a load-bearing wall in the project. Also, I love his work and his design ideas!! He just designed his own kitchen and I want to move in there. He also did a friend’s kitchen and it is way out of our budget, but it is truly amazing.

@blueskysunnyday, thanks! That kitchen has a long story behind it but it has a happy ending! Here is the garbage disposal:

https://insinkerator.emerson.com/en-us/shop/insinkerator/insinkerator-evocompact

We used a Kraus workstation sink:

https://www.homedepot.com/p/KRAUS-Kore-Workstation-Undermount-Stainless-Steel-30-in-Single-Bowl-Kitchen-Sink-w-Integrated-Ledge-and-Accessories-KWU110-30/310390306

And our contractor installed this RAS product. The cabinet shop built the wood tray for cleaning products.

https://www.lowes.com/pd/Rev-A-Shelf-35-Quart-Plastic-Soft-Close-Pull-Out-Trash-Can/50272145?cm_mmc=shp--c--prd--dcr--ggl--LIA_DCR_232_Home-Organization--50272145--0--0-_-0&ds_rl=1286981&gclid=CjwKCAiAp8iMBhAqEiwAJb94z5cPi-riFCT-E8efusppwNcLKnLeATVHDdDgnWaW4mcg7zj8cc66lRoCgdYQAvD_BwE&gclsrc=aw.ds

A compact disposal still has a 9” diameter to account for. When the too small sink cabinet is already being scooped for the sink flange, youve already weakened the stone support. Now you have to cut away a large part of the sink base cabinet wall to fit a disposal and all the drains and cords. That’s your stone’s support.

This is simple math. And its why you need a kitchen designer, a GC, and only incidentally maybe, an engineer to do the drawings for the wall removal if it isn’t in the engineering prescriptive tables. You do not need an architect, who doesn’t understand kitchen nuts and bolts.

..You have to use a smaller than a standard 33” offset drain sink in order to be able to use a disposal with a 33” sink base. Theres plenty of 25” ones. Not so many 30” ones ones.

..Or you can use a 33” sink without the offset drain.

..Or you can switch to the 36” sink base.

And your kitchen designer should know this. Too bad your architect doesn’t.

Verbo, that drawing is very helpful. Thank you. We did try to hire a kitchen designer, but the ones I could get (good) references for were all booked out for many months. So are the contractors, so we needed to get our drawings finalized so we could hire a contractor and get on the list. We are told the work can get started around June if we pick the contractor this month. Waiting until January to start with a kitchen designer and then get on the list for a contractor just seemed like it would push the project too far back as our current kitchen is falling apart.

@User, do you mind if I pick your brain one more time? My architect says "The sink base is 34 1/8" wide which makes the interior about 32 1/2" clear...The disposer is 9" in diameter or 4 1/2" from center of drain toward the side wall. The center of the drain is 4 3/4" from the sidewall of the sink so that leaves 1/4" gap....plus the 1/2" from sink sidewall to cabinet side wall. So it would fit with 3/4" gap between the disposer and the cabinet wall." Does this sound like it will work to you? Any chance the Pete's sink mount kit would interfere? Thank you!

@MinnesotaMary I loved your daughter's undermount sink with offset drain idea that brought a trash pullout and cleaning supplies all under the cabinet!! What a space-saver! I am trying to finalize the kitchen sink and considered the Kraus that your daughter has. Would you be able to find out how easy/hard it is to clean its interior considering that its edges are rounded, but small radius? Thanks, in advance!

@Sumod, I asked my daughter and son-in-law about the sink and they said the sink itself is very easy to clean but the corners are a bit difficult - "you really have to get in there" was their comment. Hope that helps. They really wanted the rear right drain, stainless steel and a reasonable price. The Kraus is all of that so perhaps as in many cases, there are trade-offs.

"When the too small sink cabinet is already being scooped for the sink flange, youve already weakened the stone support. Now you have to cut away a large part of the sink base cabinet wall to fit a disposal and all the drains and cords. That’s your stone’s support."

Not when sinks are strapped instead of clipped in place. When sinks are strapped they turn the sink into a truss which supports the stone. The scooped cabinet sides are irrelevant.

I have a 33’’ base and a 30’’ Kraus Workstation right rear drain sink too… if I don’t do a garbage disposal is there a pull out for a trash can you guys would recommend? I’ve pretty much given up on the disposal idea.

Thank you @minnesotamary

@MinnesotaMary Thank you for passing the word from your daughter about cleaning the sink. I think the idea of a sink with offset drain that makes way for trash/cleaning storage underneath is a big take away for me and you have shared the models that were used.

My Kraus was installed today and there’s so much more room on the left side for the trash. So happy!

Sorry I should have said my plumbing was installed today. If you’d like to see a pic I can send one later.