At 10:50 02/04/98 -0500, you wrote: >Edward Szpruch, >Eltek Ltd - Israel > >Actually, I would like to hear about the results of your decision making process. Denny Fritz of Macdermid, Waterbury, Connecticut, claims to have a system capable of 2/2 with new transport and alkaline etchant with 90+% yields: sounds a little too good to be true. Maybe there's a customer who can confirm? > >Paul G. Wilson >Plant Chemist >Circuit Center, Inc. Paul ! I met Danny Fritz of Macdermid in the past . I don`t know , what kind of equipment they have now . Macdermid become to be supplier of the equipment following their joint venture with Hollmuller on US market . Couple years ago Hollmuller was recognised as first class manufacturer of equipment , equal to Schmid . Later on , Macdermid took the part of Hollmuller and now they are competing , even on europiean market . Schmid is now the lonely leader , but their prices are very high !! By the way , to make 2/2 conductors , etching is just the end of the chain . What about image transfer , plating ( for tend and etch or pattern plating + plating resist stripping ! ) I had such discussion with my boss regarding warranty conditions for such equipment : I told , that we are buying pile of plastics , shafts and electricity wires . I don`t know , what kind of " net " performance tests might be imposed on the manufactorer of the machinery ... For outerlayers nothing special is required from transportation system , because outerlayers are self-supported . Rest of the stuff is mixed chemistry and machinery : 1 ) proper and controlable spray profile , especially top manifolds . 2 ) properly chosen chemistry ( rather low and fixed pH , stable chlorides , adequate aeration etc ) . 3 ) Untill now no one of Pill`s users responded ... Their machinery looks very nice and have reasonable price . I hope You got some idea about my decision making . By the way , we are manufacturing from time to time 2 mills wide conductors or even less , but not on purpose ( on the artwork they were 5 ) Edward > > ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################