

I sometimes fill the bottoms of smallish boats with hot glue to get them to float well.
Pros: Glue spreads easily, fits crevices, and is pretty cheap and easy to use.
Cons: Bit messy, not particularly heavy (though does make the prints feel more solid), bit of a pain to sort out how much glue to use and at what intervals while printing.
Can’t say whether glue would be a good fit for CNC machine parts though.





Your technique is my technique. For things that can’t wait by the door, I use whatever object will jog my memory. Fork for lunch, helmet for bike, charging cable for devices, etc.