How to get Propolis?

Looking at the Forestry wiki, the only way is by squeezing my honey drops into liquid honey, with a 5% chance at proplis. Is this the only way? Seems painful when just starting out with bees.

 

stringy combs from the industrious branch:

http://feed-the-beast.wikia.com/wiki/Bee_Species

 

If you're just starting out with bees, chances are you're going to want some tropical bees around so that you can get woven silk. When you centrifuge silky propolis, in addition to a silk wisp, you may get a bit of regular propolis too. Stringy combs are ultimately the way to go, though; if you want them earlier than you can get to the industrious branch of bees, you might be able to find/breed a beekeeper villager who will sell them to you.