Do I need to run an extractor for the fumes when printing?

Some resins do produce pronounced fumes either when opened or curing, and some printers have built-in air filters to alleviate them. Typically, ensuring that the printer is in a well-ventilated area should be sufficient without needing to run an external extractor, though you should always consult the instructions for the resin you’re using for any specific requirements in terms of operating environment.