If it really is tung oil, it will dry fine without anything added. If it is a mixture of tung oil with other varnishes, etc., it may take more time.
It sounds like you put it on too heavy. Wipe off the extra and let it dry completely. It may take at least a couple days ... significantly longer if it is really think. The first coat can be rough. When it is dry, smooth it out with steel wool if necessary and put more coats on. You will need about 5-6 coats for a good finish.
Basically, you just have to wait. It will eventually dry -- unless it has raw (as opposed to boiled) linseed oil in it, in which case it will never dry.
It sounds like you put it on too heavy. Wipe off the extra and let it dry completely. It may take at least a couple days ... significantly longer if it is really think. The first coat can be rough. When it is dry, smooth it out with steel wool if necessary and put more coats on. You will need about 5-6 coats for a good finish.
Basically, you just have to wait. It will eventually dry -- unless it has raw (as opposed to boiled) linseed oil in it, in which case it will never dry.