guitaboyled wrote:I know some are for single shots, double and even triples.
But are they compatible from one company to the next?
Some basic information:
Baskets for 58mm commercial groups will all work on any such group. A Cimbali basket will work on an LM machine. Some machines like La Spaziale use a non-standard group size and use baskets that cannot be interchanged.
Even when different baskets fit in the same group, they can be different. For single baskets, LM baskets hold more than Cimbali and Faema baskets, which hold more than NS baskets. The Rancilio single basket is either impossible or very difficult to use.
In double baskets, the LM, Cimbali and Faema (aka E61) baskets are deeper and more cylindrical than the NS and Rancilio doubles, and therefore hold a few grams of coffee more.
The number of holes punched into the bottom varies by basket. Singles have about half the holes of doubles, so they can get the produce half the volume in the same time. There are also smaller differences in hole number for different brands.
The other posters are referring to an ongoing argument about quality control, or the lack of it, for baskets. The process by which holes are punched in baskets is slapdash, so that two baskets of the same kind can have very different overall areas. However, the discussion on this has been compromised (to say the least), since it mostly ignores that quality control is the process engineering desiderata of making an existing design perform more consistently across all its produced units, rather than the design engineering desiderata of having a new design perform better than an old one.