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decent_espresso (original poster)
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#31: Post by decent_espresso (original poster) »

HB wrote:So the idea is the funnel's magnets would "snap" it onto the basket's edge? I remove the retaining clip and just "drop in" baskets; would this approach still work or would the magnets lift the basket out? :?
Yes, the magnets would hold onto the basket a bit.

I'll know more next week, whether the magnets are strong enough to pull the entire basket out in your scenario (no retaining clip in the portafilter), or if they simply add a bit of strength to the bond.

Portafilter baskets are usually made from stainless steel that is very poorly magnetic. Ours certainly are. I'll let you know the answer to your question when I've got the samples in my hands.

-john

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decent_espresso (original poster)
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#32: Post by decent_espresso (original poster) »

Slayer's preinfusion flow rate

I have always wondered if the Slayer factory was calibrating their preinfusion flow rate (via their needle valve), and if so, to what setting?

I happened across a Slayer maintenance FAQ this morning, that gives the answer:
https://desk.zoho.com/portal/slayer/en/ ... alibration
Step 6: Prebrew flow rate should be set to 40g-60g/30 seconds. If the output is more than 60 grams, turn prebrew knob clockwise to tighten. If the output is less than 40 grams, turn prebrew knob counter clockwise to loosen.
So that's a flow rate calibration between 1.33ml/s and 2ml/s.

Based on recipe times I'd found on the internet, and my own tests, I set our "Innovative long preinfusion" profile (which comes with the DE1) to default to 1.5ml/s:




For me, with an 18g dose, that gives me 37 seconds of preinfusion before the first drip comes out. That seemed in line with the 30s to 40s recommendations I'd seen for this style of espresso.

I am going to test speeding up the default flow rate for this recipe to 1.6 ml/s on the DE1, so that it's right in the middle of Slayer's recommended range.

-john

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decent_espresso (original poster)
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#33: Post by decent_espresso (original poster) »

HB wrote:So the idea is the funnel's magnets would "snap" it onto the basket's edge? I remove the retaining clip and just "drop in" baskets; would this approach still work or would the magnets lift the basket out? :?
Dan, I got your answer from my employee Winnie, who (at the end of this video) lifted the basket straight out of the portafilter, if the retaining spring has been removed. So maybe this magnetized funnel idea won't work for you.

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decent_espresso (original poster)
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#34: Post by decent_espresso (original poster) »

Scott Rao has a new book out, entitled "Coffee Roasting Best Practices"
The most advanced guide ever written about expert-level coffee roasting. There is little overlap with The Coffee Roaster's Companion, which focused on the basics of roasting and different roasting machines. This book focuses primarily on advanced techniques to craft and control roast curves, with numerous pages devoted to strategies to avoid "ROR" crashes and flicks, baked coffee, unnecessary roasty-ness, and other roast defects.
You can buy it from Rao's own site http://scottrao.com or from Decent https://decentespresso.com/books

-john


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decent_espresso (original poster)
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#35: Post by decent_espresso (original poster) »

It has begun.... other people have started writing their own Decent-compatible apps

Within 24h of each other, two Decent customers posted photos of their written-from-scratch apps for the DE1.

A native app for Windows from Mimoja https://twitter.com/WingsOfMimoja




and a native iOS app was announced too, by Brian K



both those images are only teasers of what they're working on. But it's interesting that both were announced so close to each other.

I think that happened because in the past few months, Decent has crossed over from selling mostly to coffee geeks, and now we're selling to the (larger) tech geek audience. This new customer base recently started a crazy-long and technical "big data coffee analytics" discussion thread on our private Diaspora forum. It's causing dozens of posts per day, much of it above my competency, which is great.

Last week, Decent customer Barney in the UK walked me through his skin for my tablet app, which completely rethinks how the Decent should be piloted. Barney's work is much closer to finished than the yesterday-announced Windows/iOS apps, which are just starting.



Barney's "metric" skin presents the Decent in traditional "advanced barista" terms of grind, dose, ratio and temperature. The profile that runs the shot is automatically made for you, and not the focus. Instead, you focus on traditional espresso terms that, if you have a coffee background, you already know.

This is all very good news, because as good as my team might be, we can't compete with the talents of thousands of motivated Decent customers. This is the payoff for openness.

-john

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#36: Post by decent_espresso (original poster) »

Decent Coffee Cart at Falcon Roasters

This appeared on an Instagram story today, and I thought I'd turn it into a video. This cafe has put their own very-large tablet on our DE1XL v1.1 model espresso machine. There is also what appears to be a K30 grinder, and a tamping mat.

I also found it interesting that everything in that cafe is on wheels, or easily moved.

They're using a scale to stop the shot : I need to let them know about the new "stop at pour volume" feature which removes the need for a scale for most cafes.

https://decentespresso.com/coffeecart

-john


Video by Adnan Coffee
https://www.instagram.com/adnan_coffee/

of Falcon Coffee Roasters
https://www.instagram.com/falconroasters/

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decent_espresso (original poster)
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#37: Post by decent_espresso (original poster) »

Coffee Shin TV

My plan for global world domination (mwaaaahahahah!) is to try to copy Tesla's model of no-resellers, but to have a strong presence in each major market, with my own employees in that country, and try to provide very good, appropriate-to-local-culture, support.

South Korea is the first place I deployed that strategy, in hiring a local, and having set up a Decent Base in Seoul. Shin, a young ex-engineering-student who moved to Australia for a while, to learn about coffee, is my Decent Man in South Korea.

I assume that the locals-on-the-ground know best, so I let each local Decent Base, do what they think is best. In South Korea, that means Shin visits tons of cafes and customers in person (they have a good train network), we exhibit (and sponsor, supplying machines) at the two major coffee trade shows, and..... Shin does "Coffee Shin TV"

If you're not acquainted with the style of Asian television, it's usually a wacky, surreal, sensory overload.

Nonetheless, Shin provides really excellent information about not just Decent, but also
  • coffee in general,
  • reviews grinders (as as the new Ultra grinder that's sold by Levercraft in the USA)
  • and of course, lots of Decent info.
Here's a sampling of his recent videos, which are a good introduction. Everything is in English, with Korean subtitles. You'll notice the Youtube videos don't have many views, but that's because South Korea has their own video-sharing platforms, where he's huuuuge.

His Youtube station:
http://www.youtube.com/channel/UCy0gJrM ... 8-w/videos

-john

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#38: Post by decent_espresso (original poster) »

Decent parts catalog

I have written a web site viewer for all our product parts.

You can find it here: https://decentespresso.com/parts





It's also mentioned on the bottom of the shopping cart page, and in the DE1 warranty page.

You need to first pick a product:





and then the first level of parts and assemblies is shown:
https://decentespresso.com/parts?filter ... 10V2-00211





You can further drill down to individual parts in the assemblies:
https://decentespresso.com/parts?filter ... 0_R2-13145




Some comments:
  • not all parts displayed can be ordered.
  • some parts have been discontinued, and there's a "contact us" link on those parts, to ask for help
  • some parts have been are "not yet available". That means the part is in stock, but we haven't yet done the database work to make it available for purchase. If you need this part now, click on the "not yet available" linked text and send us an email, and we'll prioritize if for you.
  • about 1/3rd of our parts have photographs. We're going to work hard of fleshing that out in the next 3 months, as we've hired  Nicole Chow Nicole  recently, to manage our parts inventory and ordering process.
  • There are mistakes in the database. For example, both the 120V and 220V AC boards are listed for one of the DE1 110V models.
  • One big motivation behind my writing this, was to provide an easy way for both Decent employees, and the outside world, to see how well (or not) we are organized.
  • By making errors much easier to see, and by making this all public, I'm hoping to clean this data up faster, and make it more accurate for everyone.
  • You don't need to report errors in our database yet, but I will announce again when I think the database is accurate, and then you guys can send us emails showing us how wrong we were.
-john

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Shawnaks5
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#39: Post by Shawnaks5 »

HB wrote:So the idea is the funnel's magnets would "snap" it onto the basket's edge? I remove the retaining clip and just "drop in" baskets; would this approach still work or would the magnets lift the basket out? :?
Hey Dan, Just curious...Why do you remove the retaining clip? Also how do you clean the basket without the retaining clip? I've just never heard of someone doing this.

jpreiser

#40: Post by jpreiser »

One reason for removing the spring is to prep the basket while leaving the portafilter locked into the group so it doesn't cool down during puck prep. Without the spring, you can gently place the basket in the portafilter without risk of disturbing the puck.

To knock out the spent puck, you would hold the basket in with your thumb.

Dan talks about some of this in his intro to espresso videos. Check out the Barista Mechanics video for reasoning behind prepping into just the basket.