This video shows you how to refill mini grease guns, like the new Park Tools GG-1 or the classic Dualco or Astro 3 oz. models. Grease guns are TERRIFIC additions to community bike shops or maker spaces. They're particularly helpful to novice mechanics, because they're easy to identify and deal with, they're clean to use, and they issue a controlled amount of grease instead of an unpredictable glob. They're cleaner and easier to store than the big tubs, and they reduce the amount of wasted grease that ends up all over the place. This means cost savings in the long run, a better educational environment, and a cleaner workshop every day.
Here's a link to one on Zoro; you can also find them for about $10 on ebay.
www.zoro.com/astro-pneumatic-...