well i think this has been touched on a few times in this thread but i still wanted to add my contribution, I started getting in to this hobbie a little while back when i was a little skint, so i popped to my local Range store (UK) and brought a stainless steel bowl this works great, all i do is float the bowl in the bowling hot sink water, the only thing i did notice was that i had to leave the brush standing on the side otherwise the weight of it in the bowl would sink the bowl. so when i was at work i was looking at my large mug and decided to start using that so now i fill the mug with boiling (close to it) water and put the bowl in the top, and then put the mug and bowl in the sink as well seems to work ok, all i need is the rubber O ring to stop the steam from excaping from between the mug and silver bowl.

Confused?