We rented a radial extractor last year, Maxant 3100, I think. We were excited to use it as a radial extractor, but it really didn't work well, so we finished using it as a tangential extractor. We loved it, and I've since looked into buying it or the power 20F. I totally get that it was probably user error. In talking to a local store, I asked what the secret was, and he said you have to let them spin for at least 30 minutes.
I did a search on here, but is there a thread about how to use radial extractors? I get that experiences vary, with honey thickness, temp etc, but how long should I expect to run each set of frames? While one set is spinning, we can uncap the next, but what do you do with the frames, between uncapping and extracting? Put them back into supers?