You can make your own with pectin or gum arabic, but Bermocoll is what you really want. It's cellulose. As far as I know, it's now what the cigar rollers use. I tried whatever my B&M sold (not el Ligador, another one), and it wasn't great. Bermocoll is tasteless, and dries really quickly.
If you don't want to make your own, the guy who sells the Modus II tool (a competitor to the PerfectDraw, I believe the original Modus was first) bought a batch and just mixed it up and sells it in nail polish bottles (1/2 oz, which is way more than the other companies sell, I believe). Look for "Bermocoll 320" on eBay.