@Avi *******
, I just found out that people who hold passports from Isreal and Turkey CANNOT bounce out and back in at ANY of the borders with Cambodia. It doesn't matter if you're have a valid multi-entry visa for thailand or just want a visa exempt entry you can't bounce at ANY border with Cambodia.
You can EXIT the country at one of those borders and go into Cambodia BUT you'd have to go to Phnom Penh or Siem Reap and fly back into thailand.
You can border bounce at any land border with Lao without a problem.
I do not know if Kanchanaburi will let you out and back in or not.
Most visa run companies that do that run won't even chance taking you there.