I just got a Vario-W grinder and tried a 1L Chemex with it which came out underextracted with a low TDS (17.15% & 1.11). I used the 9K setting for the grind and a Bonavita gooseneck at 205deg.
The issue I have is that I would go finer with the grind, but the brew time was already ~10mins to pass 1L through the grounds.
Thoughts?
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