![]() ![]() I love the stock heavy duty shower screens from La Marzocco, they are the most robust design I have ever seen and would not be concerned leaving them in service for a year in a busy shop if they were being cleaned properly. I do not dispute any claims or experience of superior extraction performance among people using the IMS screens in competition where the screen sees perhaps 30 cycles with a highly skilled barista. ![]() I would still be concerned with its resistance to impact from an errant portafilter which is difficult to avoid with new hires in a busy shop. I have not had experience with the E61 screen but I would imagine it would not have this problem. Any time an impact or crush of overdosed baskets causes plastic deformation of the screen dish the perimeter is breached and water is allowed to flow around the screen, nullifying its design. The fault in its design to my view is that it relies on elastic deformation of the screen dish against the seated position of the shower screw to create the seal against its perimeter. If you haven’t seen one up close it is a single piece of metal, with the perforations laser-etched into the surface. The LM screens I have experience with failed in a commercial environment very quickly because any impact or overdosing mistake will warp the body of the screen. I don’t recommend the IMS screens outside of a competition environment and to be fair I think that’s what they were designed for. ![]()
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