Customizable Oven Knobs

Here is a knob that I designed as replacements for my oven. I'm pretty sure the D-shaft it uses is universal, but you can easily customize the insert piece to your exact needs. the tolerance of the two parts should be good enough for a press fit. I'd recommend printing out the test piece first, then scaling the insert up or down. The insert allows for ease of printing while also giving you the ability to swap the direction the D-shaft faces.

Note: I've provided .step files for customization however, when I went to print the part I realized that there was a mesh error, so when exporting as an .stl it fixed it for me.