We  frequently see 16- to 18-point board (0.016 to 0.018 in. thick). Using 14- or may be even 12-point board shouldn’t affect most equipment much. The areas most vulnerable to using thin board are:

(1) Magazine and wallet pick: Decreased thickness increases porosity of the material and can affect vacuum pick. The wallet blanks tend to be long. Extra mechanisms may need to be introduced to bring the face of the wallet to the pick point without dragging its ends. Floppy wallet stock may affect the accuracy of code recognition due to potential variability of code location relatively to the scanner (camera).

(2) Plowing and folding: Thinner material will have tendency to be dragged back in folding plows and powered folding fixtures. It may require extra mechanisms for wallet squaring. The thinner stock is easier to imprint upon, create creases, etc. The blister inside the wallet may protrude through the thinner board after compression and make the finished product look less attractive.  A glue wallet might show witness marks from the adhesive more easily.