Methods and devices for making a plate clip for securing a plate to a channel letter including: selecting a size of the plate clip and cutting a clip form; selecting a plurality of fold positions of the plate clip based on a panel size, the panel size being based on a plate thickness and a width of a rib; cutting the clip form to form a plurality of barbs; and folding the clip form at the plurality of fold positions to form the plate clip and expose the plurality of barbs.