Another way I made enlarged negs for platinium
8x10 original neg .> 8x10 FP4 > Scala Drop process to produce soft positive with all the detail you could die for.
8x10 scala fp4 into enlarger to 16x20 > FP4 16x20 sheet film process Hc110 to taste.
great neg for platinum.
HOW I make negs today
Rollie ISO 25 in HC110 to tasted , red green blue laser exposure.