To cut a whole in the stainless topped bench I had to first cut through the metal with a cutting wheel on my grinder and then use a chisel to remove the metal and then I used my jigsaw to cut through the ply underneath a bit of finessing with a grinder ensures a perfect fit The bowl will be attached with silicone and the bowl will be weighted while the silicone cures. In the picture is also the spigot I intend to use which will be placed so that it can either be over the bowel or over the edge of the bench to fill a pot or kettle that won't fit in the bowl