Since it was made illegal by the USA FDA in the 50's, after burning Reich's publications and research materials in a New York state incinerator, to even use the word orgone in publication let alone do research or use the equipment, this information was for most of my life very difficult to obtain.
So 4 stars for putting it in my hands in a clear, informative and straightforward manner.
However, not a 5 star book. I found the information disappointing for several reasons. One, it is in theory unwise to build an orgone accumulator anywhere near civilization or major electrical equipment. So pretty useless for most folks. Two, it's not so easy/cheap building one. Three, in all the decades since Reich's work, this manual shows absolutely no advances in theory, technique, understanding.
I suggest those who are interested in contemporary orgone experimentation to check out "orgonite" on the internet, for a more modern, accessible, and available technology that builds on Reich's work.