When I need to keep wafers in horizontal position during etch I just turn regular wafer boat/cassette 90 degrees and submerge wafers in the solution this way. Just don't use all 25 wafers at the same time - leave room for picking the cassette up on the h-bar. Anna Dubnisheva, MS | Research Engineer | BioMEMS Laboratory | BME Department | Cleveland Clinic | 9500 Euclid Ave. ND20 | Cleveland OH 4419 -----Original Message----- From: Konstantin Glukh [ mailto:mems.3d@gmail.com] Sent: Wednesday, November 19, 2008 8:45 AM To: General MEMS discussion Subject: [mems-talk] Wet processing cassettes that hold wafers in horizontal position I wonder if anyone knows a vendor of Teflon wet processing cassettes that hold wafers in horizontal position during the etch. Thanks a lot in advance.