Viking burner knobs use a larger 9mm D-shaft and OEM replacements are premium-priced. Print a heavy-duty PETG knob sized for the 9mm shaft at a fraction of the part cost.
Shaft fit: 9mm D-shaft — Viking VDSC305, VDSC365, VGIS30, VGRC36/48/60, VGRT36/60, VGSC30, VGSS30. Knobulator lets you set the exact bore
shape and clearance, so the knob grips the shaft instead of spinning — the usual failure of
one-size-fits-all replacements.