Can I extend my TR visa in Thailand for more than 30 days on an Australian passport?

The original poster is on a TR visa, which typically allows a 60-day stay plus an optional 30-day extension. However, there is confusion as comments indicate that the poster may have actually entered Thailand under a visa exemption for 30 days, which can be extended only once for an additional 30 days at a local immigration office. The discussion highlights the importance of knowing the type of visa held for accurate extension options.