slipchuck wrote:What do you think caused the bubbling in the first place?
Not sure, mate. Preliminarily, (and this is bad news that I hope I'm wrong about), I'm guessing it's the same as non-stick coating on cookware, and it's bubbling because of heat from the PID controlled heater in the group... the thing that makes our BDBs play at many (many) levels higher than it's price point. Even though we're rolling in on six years since these things came out, this thing is still new and revolutionary. And to the naysayer, yes it's also true that Breville probably did not intend for us to maintain them ourselves to the degree that we are nevertheless figuring out how to. So there are still things we are discovering. Six years into a unique and revolutionary design just isn't that long. The whole purpose of banding together in a community of users, is to share what we learn and hopefully eventually overcome some of the issues we find.
baristabazza wrote:If something fails on an e61 machine I have a dozen shops that are a phone call away with parts on hand. The recent replies on this thread really make me stand by my original comments. I'll take a e61 hx over the bdb any day.
Re the bolded part of your post...
And if serviceability were my only interest, I'd have one too. Put the shoe on the other foot for moment... There is a reason people eschew e61hx's in favor saturated brew group machines, the cheapest of which is the $7500USD GS/3. And that is temperature stability. I don't know if you have been following the BDB since the beginning, but in multiple Scace tests, it has equalled or bettered the temperature stability of the GS/3. Basically, the BDB has saturated brew group temperature performance. And some of us, as appealing as a simple, bulletproof e61hx might be, don't want to be without that pro-grade temperature stability. By the way, I'm not just talking out the side of my mouth... I have not one, but two lever machines that I love dearly, that are simple and easily maintainable, that I'm sure I will have for the rest of my life. They require ministrations to manage temperature, not unlike an e61 requires, and even at that, you'll never touch BDB/saturated group-level stability.