Primus Gas Bottle Cap

We keep getting asked about this one — the gas bottle cap is one of those Primus parts that fails long before the rest of the unit is done. We've made this style of part before and can usually print yours without drama.

Why these break

Cylinder caps go missing and threads fill with dirt. The original was moulded thin to save cents at production volume. That was fine when the plastic was fresh — years on, there's no margin left in it.

How we reproduce them

Reproducing one is straightforward for us: we measure your sample (broken is fine, as long as most of it is there), match the profile, and print in a tougher modern material. Turnaround is usually within the week.

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.