If you were going to do a lot of RA4 prints then cutting rolls makes a lot of sense. You would think that there must be roll cutting machines into which you place the roll and replace the top so that once the cut length has been set only each cut sheet on exit from the machine would be exposed.

It would then be fairly simple to place the cut sheets into a bag and then a paper box in the total darkness.

Do such machines exist and if so what might they cost?