Do you have an recommendations for spiral separators that is designed for gold and black sand mix?  The blue bowl looks too temperamental.

I was going back through my black sand that I panned and finding as much gold as I got when I panned it.  The miller table is just going too slow for the amount of black sand that I have to process.  I'm assuming from what I read this is the best way to process the material unless I want to go to a shaker table?

Kevin G.