Back in the day when photographers printed their own prints, many would have a print dryer, which featured a slightly curved polished metal sheet with a canvas cover. Once the print was dry, you could also use this to mount your photos using sheets of some sort of hot glue between the print and the backing. Here is a pic of one: https://williamsdesign.ca/?product=heatrite-photographic-print-dryer the one I used was pretty big - you could get a lot of prints done in one go… probably about a meter across and a bit longer maybe 1.2m.
Back in the day when photographers printed their own prints, many would have a print dryer, which featured a slightly curved polished metal sheet with a canvas cover. Once the print was dry, you could also use this to mount your photos using sheets of some sort of hot glue between the print and the backing. Here is a pic of one: https://williamsdesign.ca/?product=heatrite-photographic-print-dryer the one I used was pretty big - you could get a lot of prints done in one go… probably about a meter across and a bit longer maybe 1.2m.