A Japanese Glossary of Chopsticks Faux Pas

https://www.nippon.com/en/japan-data/h01362/

A Japanese Glossary of Chopsticks Faux Pas

An overview of chopsticks gaffes that are best avoided when eating in Japan.

nippon.com
Holy cow! I thought there was going to be a list of 8 of them... There's like 40!

Interesting. Some of these are big deals (particularly the ones mentioned as important) but others I have seen Japanese people in Tokyo do quite consistently. Soroebashi - not on the table, but I've seen chopsticks aligned by pushing them against the plate hundreds of time. I've also seen them used to stir miso soup, etc. plenty.

Others I don't know that I would have much of an inclination to do and haven't seen but am not sure if it's because it really is a faux pas or just because no one else really tends to do it either.

it's like western etiquette: upper class, fine dining traditional practices are not what you'll see everyday even among polite society. the spectrum of behaviors will also depend on one's company.

Most of these are common sense. As a tourist foreigner, you also aren't expected to know all the customs but it's appreciated when you try. The one about which direction to NOT point the chopsticks in was new to me. If you just watch what other people are doing, then try to do the same thing, you're probably on the right track.

Related to eating, one pro-tip I got from a local is that when you're ready to close your tab or get your check at a bar or restaurant, you can make a small X with your index fingers.

Really useful in a busy bar!

I was shocked to find it's a faux pas to rub disposable chopsticks to remove potential splinters. I was taught this is what you're supposed to do with disposable chopsticks.