Responding to user feedback, Edge Pro has created a new sharpening platform for smaller blades that works on both the Apex and Professional models. If you are working a lot with shorter blades, this smaller platform allows more flexibility with smaller blades, including knives with thumb studs, to retain the precision sharpening you expect from Edge Pro products. The attachment measures 2 inches wide, 5 inches long and 1/4 inch thick which will protect the main platform of the machine. It includes an adjustable miniature guide plate to accommodate small knives of varying widths.
In the Edge Pro instructional videos, Ben mentions building a riser block and this Small Knife Attachment removes that need, it is an adjustable riser block.