Herb grinders are typically manual or electric and each type has its strengths and weaknesses.
Manual grinders, as the name suggests, need some elbow grease because you have to do the grinding yourself. Even though they require more effort, it is easier to adjust how thick or how fine you want the ground herb to be with manual grinders. Plus the herb is collected in a handy compartment, so there is less mess and the herb is easier to load.
Electric grinders are easier to use but it can be difficult to control how fine you want the herb to be ground. Also, most electric grinders don’t have a built-in compartment to deposit the herb once the grinding is complete. They also typically hold less herb than manual grinders do, plus you have to worry about battery life or mechanical failure. For those reasons, a manual grinder is a preferred method of preparing the herb for most seasoned vapers. Here are the reasons for using a good one.