A foolish idea? Creating a positive transparency from a negative

[Tin Can]

I also covered my windows with 4 sheets of 14x17 inch x ray positive backlit for pedestrian night viewing

[FrancisF]

I have tried contacting printing a negative, FP4, on FP4 for a b&w transparency...without much success.

Using the Photography Formulary reveral kit for TMax, I had great success in 4 x 5. Encourges me to go bigger.

[bashful]

Thank you all for the input! As I suspected, there's a great deal more to this than I realized.