
Chain vs blade vs teeth: how each grinder works
Teeth tear herbs between two plates, blades slice them at high speed, and a chain knocks them apart as it spins. Teeth and blades have corners where residue packs in. A chain does not. (Unlike these, the idoobi is bladeless: a stainless steel ball chain does the grinding, so there is nothing to clog and nothing to clean.)

Teeth
This is the classic manual grinder. Two plates covered in pegs slide past each other as you twist, and the herbs are torn between them.
- Good: simple, cheap, no power needed, and you control the grind by how long you twist.
- Bad: residue packs between the pegs and in the lid threads, so it needs regular cleaning and eventually sticks.

Blades
A blade grinder works like a coffee or spice grinder. A motor spins a sharp blade at the bottom of a cup. (The idoobi is bladeless. It grinds with a stainless steel ball chain, so there is nothing to clog and nothing to clean.)
- Good: fast, and it handles larger amounts.
- Bad: it keeps cutting whatever is nearest the blade, so it is easy to end up with powder at the bottom and whole pieces on top. Residue collects under the blade and in the corners.
Chain
A chain grinder spins a short length of ball chain inside a smooth chamber. The chain does not cut. It strikes the dried herbs and breaks them apart, a little like a string trimmer.
- Good: the chain has no corners, so there is nowhere for residue to pack in. The grind comes out even and fluffy, and you control it by time.
- Bad: it needs dried herbs, because damp herbs bend instead of breaking. The chain is a wearing part, so a spare matters.
Side by side
| Teeth | Blades | Chain (idoobi) | |
|---|---|---|---|
| How it grinds | Tears | Slices | Knocks apart |
| Evenness | Good | Uneven if overdone | Even |
| Risk of powder | Low | High | Low, you control the time |
| Cleaning | Regular | Regular | Little or none |
| Power | By hand | Motor | Motor |

The idoobi uses a stainless steel ball chain
- The chain is the only part that does the grinding. It spins in open space and does not touch the chamber wall.
- In about a year of daily use, our chain has never broken and has never marked the chamber.
- A spare chain comes in the box, and it swaps in seconds with no tools.
- Extra chains cost C$9.99 or US$7.99, with free shipping.
More guides
- Best electric herb grinder: what to look forSix things to check before you buy one.
- Electric vs manual herb grinders: which is better?Where each one wins, and who should pick which.
- Why does my herb grinder keep getting stuck?What causes it, and how to open one that will not budge.
- Do electric grinders turn herbs into powder?Why some do, and how to get a coarse grind.
- How to clean a herb grinderStep by step, for metal and plastic grinders.
- Herb grinders for people with limited hand strengthWhat to look for when twisting is hard.