X-Ray film use question

[Dan6077]

Hello All!

While exploring the internet to learn the methods of creating Kallitype prints I came across a statement that has me scratching my head.
A post claimed that you could enlarge a standard film negative onto X-Ray film and once developed you would end up with the X-Ray film looking like the original film negative, which could then be used as the negative for the Kallitype

Is there anyone out there that has done this, and could they elaborate on their techniques

Thank you

Dan

Note : I have since learned about x-ray duplicating film. I wonder if this is what the poster was talking about

[Tin Can]

X-Ray is always blue tint to lessen eye strain to doctors
Look up internegative

[Dan6077]

X-Ray is always blue tint to lesson eyestrian to doctors

Look up internegative

I was looking up internegative when I found that message
I just wish I had made a copy of the link so I could reproduce it here

[Rick A]

I usex-ray film for enlarged interpositives and internegatives on a regular basis, the hardest thing to get right is exposure times, they are extremely short.

[Jim Noel]

I use x-ray film for general photography as well as for making interpositives. It works best if you can mount your enlarging lens in a shutter. Shutter exposure times don't have to be too accurate, just consistent.

[Michael E]

You can develop any black and white negative film to produce positives. There are reversal process chemistry sets on the market (as far as I know) or you can mix your own. I once found instructions in an old german photo magazine from the 1980s. I have no experience with the process and no idea if the results are worth the hassle.