"This is really a nice piece of commercial/industrial quality hardware.  The extra thick material you used for our sink is extremely sturdy, but still lightweight.  I can see that 3/8” would have also been more than adequate.  I don’t know if most users hook the hose to a permanent drain, but so far, we are just keeping the drain hose elevated until we actually need to drain the sink.  Not sure if it was really necessary, but I did add a small stainless steel hose clamp to the drain fitting (not tightened too much).

I noticed you sold an LED lighting accessory.  We already have excellent overhead lighting in the studio plus an adjustable neck lamp with a bright LElb to illuminate the grinder bit on the grinder.  The only thing I notice is there is some tendency to get bounce-back glare off the outside of plastic face shield that you supplied.  I might replace that with non-glare glass, which might cut down the glare.  All of this is the usual minor tweaking.  I gather you don’t want to ship glass due to breakage risk, which makes sense.