Reynolds853,
Thanks for that link. I think there may have been an answer to everyone's questions buried within the article. After an explanation of the long process of consructing the Cast capacitor with paper and copper foil and oil (very interesting process), there is a picture of what appears to be Cast capacitors that look the same as the oil and paper Cast capacitors, and the writer explains that they are a new product, Cast mylar capacitors.
This might explain Grannyring's experience with opening up one that appeared to be all plastic.
Thanks for that link. I think there may have been an answer to everyone's questions buried within the article. After an explanation of the long process of consructing the Cast capacitor with paper and copper foil and oil (very interesting process), there is a picture of what appears to be Cast capacitors that look the same as the oil and paper Cast capacitors, and the writer explains that they are a new product, Cast mylar capacitors.
This might explain Grannyring's experience with opening up one that appeared to be all plastic.