No, no...I get your point. I guess a recast is a recast is a recast. It just seems likes some people do it better than others. Is it resin like Sarge's or some other material?
I would see no reason a different type of resin was used on the inside of that bucket. Most likely he just dyed the resin on the second or third slush to give the inside a clean black color. It appears he used Smoothcast 300 to do it. Thats what I use in most of my props and my CG helmet. Its a different resin then the SargntFang helmet is. The SC300 is a bit softer and more flexable but only enough to keep your prop from breaking easily. Similar to ABS where it can bend a little if its thick. I have dropped my CG helmets quite a number of times and they dont shatter or break eaisly. I have no clue about the properties of the resin SrgntFang uses though. The only time I was around one I came away feeling it was a bit to brittle for my taste... but JMO.