Does SQ interline luggage with Thai
 

I have a flight from DPS - SIN on SQ the connecting Sin-BKK on Thai and BKK-ZRH on LX. When I checkin at DPS can SQ check my luggage all the way through to ZRH? Also does anyone know if they will be able to print my boarding pass for Thai while I am in DPS?

This is all on an AE reward ticket if it changes anything.

As long as you got your tickets showing the full routing there should be no issue to check the luggage through all the way. Just make sure the agent puts it in correctly with the right flight numbers and all. Basically, check the luggage sticker.

Great thanks! I've never had a connection on three different airlines like this, so wasn't too sure how it would work.

Does SQ interline luggage with Thai
 

As a data point, this is possible even on separate tickets as long as you show both (or more) tickets at the first check-in point.

SQ will thru check all the way to ZRH and print all respective boarding passes as well.

List of Check-in Partners

Yes, have done it many times without problems.
Do note however that because SQ has TK as a check in partner, you should assume that TK will do the same (or TG for that matter in this case).

But as far as SQ is concerned, you are good to go.