@macsnax,
I assume because you said that you didn't want to use alcohol for your tincture that this is for topical use?
I am sure a straight vegetable glycerin, mix would work, but it will be like putting honey on your body.
So you may want to thin it out with some propylene glycol.
Here is a video that shows how to make an e-juice mixture which I am sure would work just fine as a topical tincture.
Both the ingredients they use are used in lotions and food, so they should be good for your skin.
Here is a video showing what I was talking about, how a VG dominate juice is thicker than a PG dominate juice, which is much thinner.
The only thing is, the first video doesn't suggest warming the liquids when mixing them and I think this would be a good idea.
You can mix the VG and PG at room temp, but heat them before you add the CBD.
It just needs to get to like 170F or so and held there for a few moments, then you can add the CBD crystals and allow it to cool.
Once you have mixed the VG and the PG, you can heat it in the microwave or in a borosilicate glass inside a pan of some simmering water.
I hope this was helpful.