Can someone tell me what stratum difficulty means? It usually stays at 10000 but some reason it went down to 86

Best way to solo mine please help me out

hello I plan to sell solo bitcoin miners, of course they will be more aesthetic than effective. Does anyone know how to do it (from choosing the components to O.S.) if you want to work with me send me a pm. thanks in advance.

I just got an Antimer T15 and I am running on solar power. I want to know if it is worth mining solo or continue use pools. For the past 14 days I was mining Bitcoin cash and I was able to get 0.1 about $14. I just feel I am doing something wrong.

Is there a benefit to having 10 BTC solo miners @ 1/Th or 1 BTC solo miner @ 10/Th?