Posters on another forum are adamant that you can get a re entry permit for a SETV. Some claim if you re-enter before the expiry of the visa you will receive a further 60 day entry. Some say you are allowed to stay up until your original permission to stay date from your original entry. I have never heard of anyone doing this before. Today someone claims they got a re-entry permit on a visa on arrival (not VE) as they had to go to Malaysia for 3 days.

I think it is pretty clear that name of this kind of visa tells you, that you can use it only for single entry.

Leave that forum, all that information seems nonsense.

1 hour ago, stratocaster said:

Posters on another forum

You sure that isn't "posers" on another forum? ????

The way a single entry tourist visa works is:

You enter, get stamped in for 60 days, the visa itself gets stamped USED or struck thru, and you can extend that one 60 day entry by 30 more days at the immigration office where you stay for 1900baht.

A re-entry permit WOULD let you exit/re-enter thailand
BUT
re-entry permits do NOT add any additional time to your entry/extension stamp, you'd get stamped in for the same expiration date you stamped out of the country on ????