I created several R/F designs using a combination of CLTE and GETEK last year. As Ron said,
the stuff be managed well in well managed pre lamination, lamination, and post lamination
phases. Delamination can be a serious issue, but is minimized by those having been down the
road. Another issue is cure. If not properly cured, you can take a pen knife and lightly pick
away at the crumbling surface and deeper as the powdery substance comes apart. This condition
usually is found in areas on/in the board exibiting "blisters" or really serious
delamination.

Not advertising, but the two shops successfully completing both test panels and production
boards were Multek and Praegetzer. I only tried a couple of other local Bay Area shops and
they didn't make the cut.

As Ron said, the "resin" system, for lack of better terminology, is made PTFE, and a ceramic
"frit" that, when coated/treated to the 106 glass style has a tendency to behave in a
difficult way. Arlon and Rogers, who developed the "resin" system, talk about the mixture as
chunky peanut butter being spread on a piece of glass fabric with hopes of making it stick.

Not matter the difficulties, it certainly is attractive from a Dk standpoint. 2.94 is getting
closer to air and, when successfully laminated, offers excellent dimensional properties.

Earl Moon

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