I have just acquired a Unicolor print drum (5x7 inch size) which I intend to use to process 5x7 and half plate black and white film. I will be using FP4 and HP5 film and Ilfosol 3 developer, probably at 1+9 dilution.

The drum came without any instructions so I am unclear as to how much developer I should use for a single sheet.

Does anyone have experience of using a hand-rolling print drum method and can offer advice on how much liquid is necessary for good results?

And are there any particular tips on what to do and not to do to make this method work?