I'm predicting that the answers will be "just practice more" (It does begin to feel like it's a "have you tried to turn it off and on again?" version of the art community), but at the same time, you can spend years practicing drawing perfectly straight lines... Or you can just grab a ruler. So I wonder if there are some nuances or techniques to reducing the boiling, other than developing machine-like precision?

make it your style and continue ed edd n eddy

stellar_hips said:
I'm predicting that the answers will be "just practice more" (It does begin to feel like it's a "have you tried to turn it off and on again?" version of the art community), but at the same time, you can spend years practicing drawing perfectly straight lines... Or you can just grab a ruler. So I wonder if there are some nuances or techniques to reducing the boiling, other than developing machine-like precision?

As far as I know, animations are not pixel perfect, just look for any post and you will notice that in every frame the lines "giggle" a bit, perfectly straight lines make the animation look somewhat motionless, and if I am not mistaken, they simply "trace" the lines from the previous frame or they copy it, but I am not sure. I do know that they draw the main keyframes and then fill in the frames between those, and animation can be quite forgiving when it comes to linework, as the average person can't (unless they slow down the video) notice the "messy" lineart.

These are my two cents as a non-animator (or an artist of any kind).

Edit: Most of the artwork in drawn at a much higher resolution than the final result, in other words, artists have a lot of room for "error" when they work on the finer details.

The concept of "line boiling", and some advices...
https://www.youtube.com/watch?v=it3PGEcaobk
https://www.youtube.com/watch?v=yVcZXW80GKA
https://www.youtube.com/watch?v=ynBENQJBQbE

I love traditional animation, and one day, I hope that I will have the time to start study and practice it.