I ordered several of these 20mm cylindrical drawer pulls from build.com for a few bucks each. They are a friction fit in my MFT/3 and my MFT 1080. They don't seem sturdy enough to clamp against, put they are perfect for locating a jig on the mft top.
Liberty Hardware PN2814C-C Whistle 13/16 Inch Diameter Cylindrical Cabinet Knob
Liberty Hardware PN2814C-C Whistle 13/16 Inch Diameter Cylindrical Cabinet Knob