I have a small bathroom I'm trying to remodel and have a subcontractor working with me. I kinda don't trust him any longer. I'd fire him but I'm in a contract and we're very close to the finish line. I've caught him in lies regarding what can or can't be done regarding some unconventional approaches to working with other projects in my home. For example, I had a modern vessel sink made of resin stone and asked if the edges could be cut off so we could make it into an undermount sink. He told me that the fabricator he works with said it can't be done. I suspected he was full of it and went to a quartz fabricator location myself. I just walked in unannounced, was able to speak to someone and asked if it could be done. They dropped what they were doing and did it for me in less than 25 minutes. This was the sink I had cut leaving a 1.5" lip around the ramp's edges which will serve as a way to anchor the sink underneath the quartz vanity top:
That turned out very well. I will try to provide photos of that sink at a later time. But I also have another bathroom that's much smaller and I'm having a hard time pulling it all together. Firstly, if I do a vessel sink, I'd have to get a very tall faucet that would stick above the bottom of the medicine cabinet on the wall. All medicine cabinets in our home have been installed 47" from the floor. Meaning, the bottom of the mirrored cabinet is 47" from the floor. Our cabinets with the quarts vanity top will be at a height of 36" from the floor, which is the newer standard, I believe.
I know there are a lot of options out there. My subcontractor said they can cut a circular hole to match the shape of an undermount sink (whether it be circular or square). I am heavily into modern design (which works against simple easy solutions, of course) and am trying to make my home aesthetically pleasing while working in my dimensions. Lastly, the room is very small and the depth from front to back for the vanity sink is only 20".
So, I have two questions. Below are two options for sinks I really want to work, with the first one being the preferred option. They're vessel sinks but I want to make either one I choose into an undermount sink. I have ideas on how to help support the sink inside the vanity in addition to it being epoxied in place. Since there is no lip to grab onto I would use 2x2 studs to create a frame to rest the sink on top of (inside the cabinet) so that the top edge of the sink is level with the top of the cabinetry before the quartz countertop is laid on top. My last question is, since this sink is 5" - will this be too low to allow for proper drainage of the water?
Not sure if it matters but this is going to be a powder room that will only get occasional use. It's not a main bathroom. Lastly, the dimensions for the vanity area are 20"Dx37.5"W. This sink is 24.5" wide by just under 15" deep (front to back): Link with specifications can be found here: https://www.homary.com/item/vessel-oval-bathroom-wash-sink-stone-resin-26862.html
A possible second option is to go with this sink. But since it's 16" in diameter (I know I'm already pushing it with the option above at 15") I don't think there would be adequate clearance for a faucet centered behind the sink: Link with specifications can be found here: https://www.amazon.com/VIGO-VG04016-StoneTM-Vessel-Bathroom/dp/B07NP29NHG/ref=sr_1_4?crid=3MOMIQOM6B30P&keywords=Scarabeo%2B8811%2BBucket%2BCeramic%2BCircular%2BVessel&qid=1664024673&qu=eyJxc2MiOiIwLjIwIiwicXNhIjoiMC4wMCIsInFzcCI6IjAuMDAifQ%3D%3D&sprefix=scarabeo%2B8811%2Bbucket%2Bceramic%2Bcircular%2Bvessel%2Caps%2C206&sr=8-4&ufe=app_do%3Aamzn1.fos.18ed3cb5-28d5-4975-8bc7-93deae8f9840&th=1
May I get some solid input, please?