XLR Numeric Label / Numeric Lettering Plate

I always mixed up the gain knobs on the amplifier with the actual connected cables. To quickly correlate the numbers next to the knobs to the actual cables, I made these labels / lettering plates. 

The holes match the hole pattern of Neutrik panel mounted XLR connectors and have countersunks for M3 bolts. 

I print them with a brim and switch colors on the 3.2 mm layer so that only the number is in a different color. For a smooth look, I used ironing on the top layers. An example project for one plate is included in the files. 

I have included the numbers 1 through 9. The Fusion360 file is included for those that want to modify the design or add different numbers. Single letters/digits work well. More will require a different font size.