Unit works great, quite and quick to set up. Anneals, melts and brazes perfectly. Chemical preparation directions are a little vague but fallowing the YouTube directions of Rio Grand jewelry works fine. A bit of advice to save on chemicals. Buy distilled water from the grocery store or Walmart, Buy potassium hydroxide flakes off of Amazon. Buy Heet fuel stabilizer for your methyl alcohol, roach killer from Home Depot for a boric acid to color and flux your flame. These are a cheep alternative.