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my first glance found a fatal flaw that should easily have been noticed long before these pods ever went ...
on February 10, 2016
This stainless steel refillable Keurig pod arrived at my door today.
After opening the package, my first glance found a fatal flaw that should easily have been noticed long before these pods ever went to production. The plastic knobs on the sides are held in place with short studs, which extend into the cup, where they're spread (melted, presumably) so that they can't be pulled back out of the cup. The position of these rough studs is precisely where the o-ring seal on the lid sits.
I know this because in first attempting to close the lid, I hit resistance, opened the lid back up, prodded at the studs on one side with a fingernail, and had the entire plastic piece fall out. Now that the unit simply had two holes on the side, I could see, with the lid closed, that the entirety of the o-ring's vertical width is visible through the holes.
If the design were such that the lid fit tightly and created a seal, those studs would ensure that no seal would actually be created. In this situation, however, it hardly matters, because even with those studs removed, and the holes filled in, the o-ring doesn't touch the cup all the way around. Try putting some water in it, covering the fill-hole, and turning it upside-down. It will drain quickly at the lid. Really, you don't even need to go to that much trouble: just grab the cup with one hand, and the (closed) lid with the other, now try wiggling the lid front to back. Side to side it seems to match up fairly well, but front to back there is significant play.
Ekobrew had a chance here to get the design right. Minimal competence was required to see the problem with the plastic knobs interfering with the o-ring, and to see that the o-ring's outside diameter does not actually match the inside-diameter of the cup. With a slightly thicker o-ring, and lower mounting-holes for the side knobs, this product would be much better.
In a perfect world, the drain holes on the bottom of the cup would also match those on the sides, rather than being 4x as large, to avoid the need for an excessively coarse grind. The Keurig does not brew a decent cup of coffee with a coarse grind.
In short, unless you don't mind having to modify this thing, don't bother buying it.