Hi all, so I'm in need of some guidance, so like the title says, I'm having exposure times issues, as of right now I'm using ryonet WBP red. I've used the ecotex Tex red right before this due to needing emulsion ASAP, but Ryonet Red is what im used too. Recently I've changed my exposure setup...

Does anyone have any step by step plans to build a UV vacuum exposure unit capable of burning halftones? I really want to make my own equipment where I can. Thanks in advance.