1. It is recommended to grind the grains twice:
- First, start at a coarse setting to break down your grains.
- Second, change the setting to a finer grinding level for regrinding.
2. For hard grains, it is recommended to use speed settings 2 to 4.
3. To grind hard grains like corn into a finer powder, it may be necessary to grind them 3-4 times.