This adapter allow you to use a soldering iron to insert heat nuts into your plastic models using the press portion of a Drill Press. Use a soldering iron kit like this: https://a.co/d/1kT9xzn . I printed it out of PETG because it gets hot in my garage in summer (45C+). There is a 12mm model for use in ½ inch drill presses and a 9mm model for use in 3/8 drill presses.

CAUTION CAUTION CAUTION Do not use the drill portion of the drill press. Bad things will happen. Unplug it if you think you might turn it on.