We have a "half bath" - a small room with a toilet and a sink on the first floor. The sink is made of two pieces, the basin and the pedestal, both of porceilian. The pedestal hides the water and drain pipes, it's of a vintage of the past decade.
The basin is simply propped atop the pedestal, it is not attached with any hardware, nor it it fixed to the wall! The pipes alone keep it in place!
I checked to see if there was any way to mount it to the wall or the studs behind the wall, but there were no holes for mounting hardware at all.
The problem is where the drain built into the sink meets the PVC pipe of the house's plumbing, just a nylon nut keeps them together.
If a guest is heavy, or has a leg injury, or is inebriated, they may place their hand upon the basin to help them get up from the toilet. When this happens, if they are sufficiently heavy, it will shift the basin off the pedestal and pop the metal drain from the PVC drain, causing a significant leak, and I have to crawl under the sink and hope the threads weren't stripped as I reposition the nut to join them again.
How can I mount the sink to either the wall or the pedestal such that it won't shift with ordinary weight applied briefly?