Does anyone know of a grinder that can grind the whole vine? Currently i'm wrapping the vines in cloth, smashing it up with a hammer, and then putting that into a coffee grinder. I can only get a small amount in the coffee grinder at once, and the hammering also takes many tries as well. I'm looking for a better system.

I use a commercial grade blender for bark and vine.

I use a Salter EK2002 for both vine and MHRB. For the vine you would still need to process whole vine with a hammer like you are but the Salter can fit in far more than a coffee grinder. I used a coffee grinder for years but my current blender can get me a couple of hundred grams of ground up product in ten minutes.