coffee forum, ?????, ?????, fresh coffee beans and tea house

[leko]

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http://www.youtube.com/watch?v=3_9xHCh-qeI

[nyl]

first you gotta consider the consistency of the sizes the basket's hole , i have tried the stock gaggia basket and frankly they are quite uneven. some holes are not evenly drilled through and some are only half a hole.

with such initial issue , there are chances that the smaller grinds get stuck half way through the hole and create this jet. which is a common issue with naked portafilter and MAY have little to nothing to do with the distribution.

before making changes on the hardwares (grinder / basket) you can try different distribution method and see if it helps since the extraction is little uneven judging from the video.

if you are already getting the extraction even but issue still persist , you will need to live with it. afterall it's the taste that matters.

PS. hardware factors may include
1 - grind inconsistency
2 - basket hole size inconsistency

i have had similar issues when i was brewing with feima 600n grinder and gaggia stock basket. sometimes it was fixed by better distribution and sometimes it didnt.
i dont experience that no more with my current hardware setups.

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[leko]

Thank nyl for your explanation.
I have checked the holes of the basket in details. It seems quite even.
I agree the extraction is uneven. I think the reason is the water's speed is uneven as my tamping technic is not good enough.
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[koonyue]

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[leko]

??????? 18g?

[isaac1213]

[leko]

Isaac ??????????????

??? Shing ????? 5g ????
??????????????? relax 吓???? 12 ??????????????????啲??
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??? Isaac ????????????????????? creama ????

[isaac1213]

[leko]

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????????????????????Isaac ??????????

[isaac1213]

[isaac1213]

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???????http://isaacwmt.wordpress.com/
Gaggia Classic + Eureka Mignon + ??? + OE LIDO#629 + OE LIDO 2 (1st Batch) + KONO SK-3A + KALITA 600

[leko]

? Isaac ???????
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[henzcrema]

[leko]

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http://youtu.be/z5sDJUrXU-Y