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emeritus · 23rd Dec 2019, 6:39 pm

When, in the 1970's, we needed to encapsulate an RF assembly that had a tuned circuit using a printed circuit inductor, we used a type of Araldite that had a closely-controlled dielectric constant.

Its dielectric constant was about the same as Benzine (Benzene?), and we did our pre-encapsulation tests in the lab with the assembly in a large open beaker of Benzine until a chemist friend told me about the dangers of Benzine vapour inhalation and the need to only use it in a fume chamber!

23rd Dec 2019, 6:39 pm	#4
emeritus Dekatron Join Date: Jan 2012 Location: Brentwood, Essex, UK. Posts: 5,339	Re: Reproduction 'Bakelite' Parts When, in the 1970's, we needed to encapsulate an RF assembly that had a tuned circuit using a printed circuit inductor, we used a type of Araldite that had a closely-controlled dielectric constant. Its dielectric constant was about the same as Benzine (Benzene?), and we did our pre-encapsulation tests in the lab with the assembly in a large open beaker of Benzine until a chemist friend told me about the dangers of Benzine vapour inhalation and the need to only use it in a fume chamber!