Is there a border crossing at Kanchanaburi for Laos passport holders to obtain a 30-day re-entry stamp?

Phum nam rong but i do not know if it is open,you could ask at the bus station,there is a bus to the border from kanchanaburi...i heard the ranong crossing is open atm

The border with Burma in Kanchanaburi (Phu Nam Ron/Htee Kee) never did reopen after the covid lock down.

In fact right now the only burma border that's open for people to bounce at is Kawthoung that you get to by boat from the Ranong pier. Both Mae Sot/Myawaddy and Mae Sai/Tachileik are closed.

NOTE; the borders are open for locals but they won't let foreigners bounce out and back (and Laotians don't count as locals 😕 )