I am interested in expanding my areas of research to a somewhat unrelated field, where less than half of my current competences would be directly applicable. To start collaborating with other researchers in a field, it is necessary to have some experience, and ideally, to have some papers published in that field.
One suggestion that I got when discussing this question with a colleague was to try replicating existing results from a paper, but with a sufficiently different approach to be able to publish a paper with these replicated results.
However, when I was entering my current fields of research, I was not replicating the results of others; in several cases, my research was really novel despite me being just a beginner at that time. But, I had the advantage of being a PhD student with an advisor; now just getting an advisor in the additional field does not seem to be a practicable option (maybe I'm wrong about that).
So, merely trying to replicate the results of others to establish a track record in an additional field of research seems to be somewhat suboptimal to me. Are there any better approaches that I could consider?
For context, I am currently a senior postdoc and work at the intersection of several STEM fields. My research topics are already quite diverse, but the additional field of research that I am considering would be an outlier in terms of similarity.