Not a folder as such, but I have used a piece of heavy angle iron and a rubber mallet to bend thin aluminium for lid/covers and have also used the same method to bend one large sheet of steel to make a joint free vat (with lid). Could that work for you perhaps?
It's my normal method of forming the thin lid to the ply , but in being a "toolaholic" was wondering if someone who has a sheet metal folder, has used it for this task.
Is it a potch? Any chances of a photo of your metal folder?
did it years ago when I had access to my friend's technology classroom, If I recall, doing the two opposite sides was easy, but doing the last two were a bit of a faff and SWMBO's cousin made loads of galv hive roofs for me years ago (but he had access to a whole sheet metal factory!
No, used the one at my local model engineering society
