Decent Espresso news - Page 137

#1361: Post by **NetLawMan** » April 6th, 2023, 5:37 pm

Ok. To be clear, the machine I buy for the US meets the stricter requirements of Germany, Japan, etc?

I assume that means all the tubing is silicone, etc.?

decent_espresso wrote:It can be, but I'd ask "why do you want to?" We're switching to SS for cost savings (we can cast the stainless) but the performance will be identical to brass, after we reduce mass, so I don't see why you'd want to spend money swapping out a perfectly good part.

Not sure what improvements you're referring to, as I can't think of anything exciting that we're doing there. Well, we're working on moving to ceramic-coated aluminum, which will reduce the weight and breakability.

But yeah, swapping out the water tank and drip tray is trivially easy, you just buy it from our webstore.

Don't know yet. It depends on size and controllers needed. The new pump is DC driven, whereas the current pumps are AC driven, so it's not a 1:1 swap.

We "sum up" the compliance requirements, so that we can make the same machine for everyone. For the 3 heaters, for instance, we have 3 safeties, so that we comply with the USA (thermostat) and EU (two thermal fuses) regulations.

Anything made in the EU *today* is in compliance with current lead standards.

However, lead standards were (I think) insanely loose decades ago, and I wouldn't recommend vintage machines if you're worried about lead.

And we have to comply as well, with Germany and Japan being the most stringent. I've shared PDFs of our independent testing reports, here on HB, and I can send them to you if you can't find them in the archives of this thread.

In terms of leaks, we've gone with the Nespresso connector standard, because it can move when there's no pressure, and thus doesn't have the thermal-cycling leaking problem that traditional machines that use welds or threaded connectors have.

We're E61/LM compatible.

-john

April 6th, 2023, 5:54 pm

NetLawMan wrote:Ok. To be clear, the machine I buy for the US meets the stricter requirements of Germany, Japan, etc?

Yes.

NetLawMan wrote:I assume that means all the tubing is silicone, etc.?

Silicone is stretchy and thus not a good material to use under pressure if you're pressure profiling like we are.

We use surgical silicone from the water tank to the pumps. After the pumps all our tubing is solid (not coated) Teflon, which you will also find in top end traditional pro machines (as well as in Breville and Nespresso machines).

-john

#1363: Post by **NetLawMan** » April 6th, 2023, 9:42 pm

Awesome. Thank you for the answers.

#1364: Post by **NetLawMan** » April 7th, 2023, 10:09 am

Thank you for previously sharing about the privacy. This question is the flip of that one. Let's assume I spend a lot of time building profiles. How can I back them up in case of a tablet problem?

Also, I have seen some posts about scale Bluetooth issues. Is that accurate, or has it been fixed?

What is the ground-truth about using a different self-provided tablet. For example, if I need something bigger for eye sight purposes.

Thank you.

#1365: Post by **NetLawMan** » April 7th, 2023, 10:16 am

I can't find any info on solid Teflon anywhere. Can you point me in the right direction?

decent_espresso wrote:Yes.

Silicone is stretchy and thus not a good material to use under pressure if you're pressure profiling like we are.

We use surgical silicone from the water tank to the pumps. After the pumps all our tubing is solid (not coated) Teflon, which you will also find in top end traditional pro machines (as well as in Breville and Nespresso machines).

-john

#1366: Post by **umpqua5** » April 7th, 2023, 11:54 am

Glad you covered this as I came to ask the same question due to wanting to buy the Sworksdesign tray cover. Didn't want to pay $300 and then see a newly designed machine in a few months

QQ on the $99 new group head...It appears I misunderstood what all it will include so to confirm, it will have a new non-metal bottom grouphead part and a diffuser, while we get to keep the top brass?

Thanks.

April 7th, 2023, 12:09 pm

umpqua5 wrote:Glad you covered this as I came to ask the same question due to wanting to buy the Sworksdesign tray cover. Didn't want to pay $300 and then see a newly designed machine in a few months
QQ on the $99 new group head...It appears I misunderstood what all it will include so to confirm, it will have a new non-metal bottom grouphead part and a diffuser, while we get to keep the top brass?

I think you understand, but to be clear, we're going from all-brass:

to having two inner parts made of PPS plastic, and leaving the top brass:

Here's a short video showing this:

The part will be available to current owners for $99, and the v1.45 machines will have this built in, but the price of the DE1 is going up $100 at the same time, so it's the same.

In a year we'll change from brass to stainless, on this part below. To reduce mass, so that the heating time remains unchanged, we're switching a flat heater, so that this big bump that holds the cartridge heater, can be removed.

#1368: Post by **umpqua5** » April 7th, 2023, 12:17 pm

Works for me, thanks John. Looking forward to June to order it and see how it (positively) impacts the temp change a profile may call for.

April 7th, 2023, 12:22 pm

NetLawMan wrote:Thank you for previously sharing about the privacy. This question is the flip of that one. Let's assume I spend a lot of time building profiles. How can I back them up in case of a tablet problem?

A lot of people install Google Drive and shadow the /sdcard/de1plus/ directory.

Profiles are stored in /sdcard/de1plus/profiles

Note that if you use visualizer, your profiles are automatically backed up, because every shot you make, saved to Visualizer, also includes the entire profile.

You can see a recent shot I made:
https://visualizer.coffee/shots/8e6aac3 ... 2deb63e278

and there's a button there to download the profile.

You can back everything up via an app, or USB, or Visualizer.

NetLawMan wrote:Also, I have seen some posts about scale Bluetooth issues. Is that accurate, or has it been fixed?.

If you buy a Decent Scale, you're likely to have very few problems. That's what cafes usually choose:

If you buy a 3rd party scale, it really depends on what that company is doing with their firmware. Acaia changes their firmware a lot, and the open source community tries to keep up with what they've done lately. The Atomax Skale, however, is very reliable, as they're open API as well, and unchanging.

As it happens this message just landed in my inbox on that topic, from the Diaspora forum:

NetLawMan wrote:What is the ground-truth about using a different self-provided tablet. For example, if I need something bigger for eye sight purposes.

There's a lot of hardware variation in the Android world, and weird Android OSes too. Fire Tablets from Amazon, for instance, are locked down.

We officially support two 3rd party tablets: the Samsung A7 and A7 lite. Lots of tablets do work, but aren't ones that we own and test.

If you want a larger tablet, I recommend $199 A7, with its 10.4" screen:
https://www.amazon.com/Samsung-Galaxy-1 ... 0B1M4XMY7/

If you don't want either of those tablets, I'd recommend you ask the Diaspora owner's forum for suggestions on tablets others have bought and that worked well.

April 7th, 2023, 12:27 pm

NetLawMan wrote:I can't find any info on solid Teflon anywhere. Can you point me in the right direction?

It's widely discussed on HB, for instance:

Pflunz wrote:I prefer Teflon tubes. Teflon can only become dangerous when you heat it way over any temperature a coffee machine could have.
As long as you use coated pans, you can use PTFE tubing without any risk. Actually, most tubes in medical devises are PTFE due to their properties and food compatibility.

Teflon seals and PFAS exposure in espresso machines

googling "teflon tubing espresso machine" finds many stores selling it:
https://www.chriscoffee.com/products/teflon-tubing