Chemistry Forum

I am trying to make AP. I am useing 30ml of acetone, 150ml of 3%hydrogen peroxide, and 2.5ml of concetrated sulfuric acid. I put it in the fridge for like 18 hours but it only made enough for a nice fireball. But I see pics on the web of people who have jars like half full of AP. So I was wondering if I just need to leave it in the fridge longer or add more or different chemicals.

I know that people have being using more concentrated H₂O₂ (30%) to get higher yield, but not sure about the procedure.