Mark,
Basin is acrylic/plastic, not a morter base. I'm thinking it is screwed into the bottom of the basin similar to the way a drain body is screwed into a sink basin. And I'll need to use a pair...
I am demoing an old (40 yrs) shower stall with a one piece basin and am not sure how the drain pipe is connect to the basin. I tried prying up on the entire basin with a pry bar, but it seems the...