>>2933938liquid, mostly ilford MG dev, I find powder like d76 is a pain to mix
>>2933941i have seen people make good carriers out of matte board, its easy and cheap to cut, basically cardboard. there a ton of good lenses out there, mine are mostly old schneider, nikkor, and rodenstock singe coated lenses which work just fine for B&W. A good 2 blade easel is the way to go so that way it doesn't matter if your film format doesn't match your paper size.
>>2933960perhaps try a thicker sheet of aluminum, I have made some lens boards for my crown graphic from it and it files easily. just make sure all the burrs are off so it doesn't scratch your film.
>>2933944its a 4x5 condenser with a glass carrier, 120 and 35 fit in it quite well too.