I couldn't find the Macron product using Google but it sounds a lot like
glass filled PTFE. 73, Tony W4ZT
CLIVE COLLINS wrote:
>We have a machinable ceramic in the UK called Macron and it has all the
>characteristics of ceramic but machines like a dream with new sharp tools.
>The stuff will take temperatures up to about 2000 degrees and it has a very
>stable physical attribute. I have used it in the past for excellent stand off
>insulators and it does not appear to be frequency sensitive at least up to
>2.0Ghz.
>It is not cheap but it does the job and if you have access to a machine shop
>you can virtually build anything with the stuff.
>It can be machined with all the normal tools, drilled and tapped and turned
>happily.
>Well recommended.
>
>regards from the UK
>
>Clive GW3WEQ
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