Ino on Instagram: "So, how long should you leave 18K yellow gold before you quench it? With 18K Yellow gold, patience is key. After casting, let the flask cool for 5 minutes just long enough for the metal to solidify but not so long that the investment becomes rock hard. If you quench too soon, the gold can crack or warp. Wait until the red glow is gone, then straight into water to safely break down the investment which ensures an optimal grain structure and best possible working properties. #Go