Made this whetstone jig for Amazon Whetstone kit : Amazon.com: RUIXIN PRO 8 Pcs Diamond Knife Sharpening Stones for RUIXIN PRO RX-008 RX-009 Knife Sharpener Fixed-Angle Kit, Professional Whetstone Set With Base: 100/200/500/800/1000/1500/2000/3000 Grit : Tools & Home Improvement

I made the angle 20 degrees since its the recommended angle for chef knifes, easy to remix yourself if you want other angles, it slides perfect over the whetstone and have perfect clearance from the bottom and doesnt bind and doesnt wiggle.