This is a narrated walkthrough of a contraption I made for developing sheet film in a daylight tank, instead of slopping around in the dark with open trays. So you don't need a darkroom or any special work space that you don't already have access to, assuming you've done some small or medium format film processing.
I based it on an existing technique that uses rubber bands to gently bend the film but I've had problems with it. And that method seems off-putting to some. I thought maybe i could devise a better method that would make large format photography less of a hassle. This seems to meet that goal.
The other goals were to get rid of the rubber bands and issues related to their use: absorption and cross-contamination of chemicals, deterioration, marks on the film itself. This is a chemically inert acrylic assembly, so barring physical damage, it should last as long as your interest in using it.