It's worth noting that you can also use an interferometer as a very accurate thermometer[1]. 3D printing filaments are much more sensitive to temperature variat

It's worth noting that you can also use an interferometer as a very accurate thermometer[1]. 3D printing filaments are much more sensitive to temperature variation than metals, which can be bad if you're trying to get repeatable results & don't have good temperature control. [1] https://www.youtube.com/watch?v=vupIq4epCQA https://www.youtube.com/watch?v=vupIq4epCQA