Weigh What could I pay a professional? Less than 2 Minutes of drilling and done. I drilled a 1/8" hole in the cap of a tonic bottle, filled the bottle 1/3 full with water and barely squeezed the water onto the bat. , @1 minute and done. The drain hole in the stone vessel and sink was changed! It was worth it. My sink (vessel) arrived with a hole that was much smaller than it should have been. It was a situation where there was hope. I have a thin piece Skin pre-drilled with a 1-3/4" hole saw and centered on the maker's hole. I glued it in place with a brand I can't name. The casing was less than 1/4 inch thick but served as a center drill/saw guide. Less than a minute and I saved a lot. I can't say anything about durability. Did it work; YUP!