How can an Australian extend a tourist visa in Thailand?

An Australian currently on a tourist visa in Thailand is inquiring about extending their stay, with questions about the best method, specifically whether a border run would be advisable. Responses clarify that visa extensions must be processed at a local immigration office, where a 30-day extension can be obtained for 1,900 baht. If more than 30 days are needed, a border run could provide a new entry stamp for an additional 60 days, depending on the timing and nationality. Discussions highlight the requirements and options available for visa management, making it clear what steps to follow based on individual circumstances.