@penguin42 This is the one I bought, but it's not great: https://www.amazon.com/dp/B08V8PGJVJ
The temperature is fixed, and the vacuum button is single-shot: when you release that button, it barfs molten solder back onto the board 😒
The Amiga restoration videos I watched seem to use this better gun:
https://www.amazon.com/gp/product/B07542D82F