Description

This is a replacement volume knob for the factory radio on my 2004 Chevrolet Astro, and likely fits other GM factory radios from the late 1990s and early 2000s (probably mostly earlier than 2004, since the Astro interior was old by that time). The originals (or at least my original) seem to have a tendency to split apart at the stem, which besides making it more likely to fall off makes it more difficult to turn the radio on and off reliably. OpenSCAD source code is available on GitHub under /oldlaptop/astro-knobs , along with several other replacement interior control knobs for the same vans. (Note that the source code is ISC-licensed, specifically.) You are likely to find that some fine adjustment of the inside stem dimensions (stem_id in the source code) is necessary to achieve the appropriate fit with your printer, material, etc. I recommend orienting with the front down (and therefore the stem up) and using a brim.