Videos of espresso extractions - Page 4

#31: Post by **cannonfodder** » June 19th, 2006, 11:27 am

You are still getting side channeling, the shot starts from the sides and works its way in. it will be interesting to see what kind of change you get using the WDT. What kind of tamper/grinder are you using? I have had similar problems with an ill fitted tamper.

June 19th, 2006, 2:01 pm

cannonfodder wrote:What kind of tamper/grinder are you using? I have had similar problems with an ill fitted tamper.

The grinder is a Mazzer Mini. Setting is about 2 markings left of the "zero" line.

I've got 2 tampers (Home Barista flat, and Reg Barber convex) and can't remember which one I used here

If it was the flat one, I'd use a NSEW+vertical tamp. If it was a convex, I'd just go with a vertical tamp.

July 4th, 2006, 9:24 pm

For your viewing pleasure, the board now supports "[gvideo]" and "[youtube]" tags for embedding videos within your post. See Uploading video files for HB for details.

From One week with the La Marzocco GS3
«missing video»

#34: Post by **Dogshot** » July 7th, 2006, 10:49 pm

I thought I would join in the fun.

This is a shot of 2-day old Yirgacheffe roasted just into 2nd crack. 15 grams, WDT with a flat tamper (Brewtus II and Macap M4 stepless). In keeping with Dan's preference for verisimilitude over beauty-shots, this is my first video of an extraction. Hopefully both the pours and the camera work will improve in time.

«missing video»

#35: Post by **okaychatt** » July 9th, 2006, 2:41 pm

I am thoroughly enjoying this thread and am learning a lot. Keep it coming, guys.

#36: Post by **cannonfodder** » July 12th, 2006, 9:20 pm

Looks like your distribution or tamp favored one side of the portafilter. How much volume was that shot (to the top of the crema)? It looked to be flowing pretty fast, more than two ounces. You had a couple of channeling jets. I would try tightening up your grind or increasing your tamp pressure. Bottomless portafilters are wonderful learning tools.

July 12th, 2006, 9:39 pm

Thanks pravspresso for your willingness to share the less than perfect extraction. Allow me to add my John Madden style commentary to Dave's observations:

First sign of trouble - beading is uneven

Behind the stream you can see that the center extraction is slow

The one you show your friends

#38: Post by **pravspresso** » July 12th, 2006, 9:51 pm

AHHAH..

thanx guys. i'm still a newbie and learning.

I'm going to take this advice and practice couple times a day. (holiday time of course)

#39: Post by **cannonfodder** » July 12th, 2006, 9:51 pm

In the interest of 'we have all been there' allow me show three still photos of three different shots.

#40: Post by **LeoZ** » August 5th, 2006, 1:41 pm

my 3 part addition to this thread..

First is my old krups machine, with 'not fresh' beans, and ground a few days prior at the store where i used to buy them. boy have i come a long way!

i troubleshot the terrible extraction to be from stale beans.

i dont have a good vid cam, so these are all from my camera, no sound either :/