4pp Fold
ie one sheet folded in half (eg an A3 sheet folded in half creates 4pp A4)

4pp with an off-centre fold

8pp cross-fold
ie one sheet folded in half then folded in half across it’s previous fold (eg an A3 sheet folded in half creates 8pp A5)

6pp Roll Fold
ie one sheet folded in thirds rolling in on itself
NB the 2 panels A and B need to be 2mm bigger than panel C to allow for C not to foul on the inside fold (eg an A4 sheet folded in thirds creates 6pp 1/3A4 - sometimes erroneously descibed as “DL” becuase it fits into a DL envelope)

6pp “Z” Fold or “Concertina” Fold
ie one sheet folded in thirds in opposite directions
NB these panels can be the same size or they can be changed to make panels of differing sizes (eg an A4 sheet folded in thirds creates 6pp 1/3A4 - sometimes erroneously descibed as “DL” becuase it fits into a DL envelope)

8pp Roll Fold
ie one sheet folded in quarters rolling in on itself
NB Panels A & B need to be 2mm bigger than panel C then it will not foul on the inside fold, & panel D should be 2mm smaller than panel C (eg A sheet 210mm high by 394mm folds to 210x100mm - panel C will be 210x98mm and D will be 210x96mm)

8pp “Z” Fold or “Concertina” Fold
ie one sheet folded in quarters in opposite directions
NB these panels can be the same size or they can be changed to make panels of differing sizes (eg A sheet 210mm high by 396mm folds to 1/3A4 - sometimes erroneously descibed as “DL” becuase it fits into a DL envelope)

8pp “Half and Half again” Fold
ie one sheet folded in half then again in half making “quarters”
NB these panels can be the same size or they can be changed to make panels of differing sizes (eg A sheet 210mm high by 396mm folds to 1/3A4 - sometimes erroneously descibed as “DL” becuase it fits into a DL envelope))

8pp “Closed-gate” Fold
ie one sheet outer 2 panels fold towards the centre and then folded through the centre
NB the outer panels must fold short of the centre line, by 2mm, to prevent them fouling when the centre fold is made (eg A sheet 210mm high by 392mm folds to 1/3A4 - sometimes erroneously descibed as “DL” becuase it fits into a DL envelope)

12pp “Map” Fold
ie one sheet folded in half then folded in thirds “Z” style
NB these panels can be the same size or they can be changed to make panels of differing sizes (eg An A3 sheet folds to 1/3A4 - sometimes erroneously descibed as “DL” becuase it fits into a DL envelope)

24pp “Map” Fold
ie one sheet folds sixths “Z” style with a cross fold
NB these panels can be the same size or they can be changed to make panels of differing sizes (eg An A2 sheet folds to 1/3A4 - sometimes erroneously descibed as “DL” becuase it fits into a DL envelope)