I am an old screen printer from way back. We used to use 50m x 1m rolls of ruby and amberlith and used approx one per month. When it started to get harder and dearer to get we changed over to buying clear acetate film on rolls and printing our positives on a Mutoh Draftstation with dense black ink. Was available from Autofilm in Sydney. Advantages were, no weeding and the ability to do any tone work, photographic images etc.
Hope this helps Regards FOXFLAGS Darrell 0414 477220