Coromal Roof Vent Knob

If the roof vent knob on your Coromal has cracked or crumbled, it's a part we can usually sort without chasing discontinued spares. With your sample on the bench this is a realistic reproduction job.

Why these break

Vent winder knobs split at the shaft. The original was moulded thin to save cents at production volume. That was fine when the plastic was fresh — twenty years on, there's no margin left in it.

How we reproduce them

The process is simple: drop the part in or send clear photos with a ruler in frame, we confirm fit details, and print replacements — often with a little extra material where the original always cracked.

We print these in ASA. ASA is the UV-stable cousin of ABS — it holds its colour and strength through years of Australian sun where the original plastic went chalky and brittle.

As with everything in our library: whether a part can be reproduced depends on size, load, heat, material, and having a decent sample to work from. Send photos first — the assessment costs you nothing, and we'll tell you honestly if a genuine spare is the better option.