Can WDT cause an increase in flow rate?

Can WDT cause an increase in flow rate?

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Can WDT cause an increase in flow rate?

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Can WDT cause an increase in flow rate?

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Can WDT cause an increase in flow rate?

Can WDT cause an increase in flow rate?

minimum dose size?

Jan 31, 2024 |

I use the Hario switch to brew my coffee and am trying to reduce my caffeine consumption. Hence I would like to brew smaller cups of coffee. I am currently using 10g of coffee with 160g of water. (1:16 Ratio) I am wondering if there is a minimum amount of coffee...

Can WDT cause an increase in flow rate?

So this weekend I finally got my needles (0.4mm) in and printed out a wdt tool to see what all the hype is about. I brewer roughly 10 shots and (apart from the first) they all had suffered from a overly high flow rate. 40 grams at roughly about 18 seconds. The taste actually improved considerably to previous (seems more balanced/sweet) however there was little to no crema and the shot wasn't as thick as before.
I tried both increasing dose (from 16 to 18g) and decreasing (2 and 3 clicks down) grind size both seperately and together but neither seemed to actually affect the output rate that much. Initially I suspected channeling but the puck seemed fine (but since I don't have a bottomless portafilter I can't verify further).

My main question would be, wether any of you noticed anything similar? And what would you suggest to change/look at next?

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