Nice water pipe ... im sure ya blew and flushed it a few times b4 hitting it . The glass ya drilled out leaves glass dust shards behind and is what causes most harsh hits from pipes ect that do not have the holes blown into them . Thats why alot of times if you get " India glass " which is cheap overseas made items . You can tell them apart from a usa blown as the carb hole is drilled out and not smooth . Leaves behind glass shard dust and is bad for your sensitive lungs