@Rhino1 this one had a recognisable tube after only 2 weeks, but every time it finds more spagnum moss it will add it to the end so it's a continuous construction project. This one came from the Curtis Falls track at Tambourine, there's a handful of visible tubes along the pathways. Idk if it's just an individual thing or not, but the gold is so visible that you can see it even in a dimly lit room, which is kinda cool.
Amusingly, her tube is actually larger than my Golden Tube Spider's (another currently unnamed Arbanitis sp, but it least has a page online about it) one. I've seen their wild tubes which are almost 40cm high up a plant stem, but mine has only made a tiny one compared to this. Both species seem to only build them out of spagnum moss though, ignoring any other materials I put inside their enclosures.