How to Clean a Weed Grinder: A Step-by-Step Guide

A grinder that has stopped turning smoothly is usually just dirty. Resin builds up on the teeth and in the threads, and half an hour of cleaning restores it. Here is how to do it properly.

The parts of a grinder

• Top lid: unscrews to open the grinding chamber, usually grooved so it can be gripped.
• Grinding chamber and teeth: where the material goes. The teeth are the sharp protrusions that shred it, commonly diamond- or pyramid-shaped.
• Magnetic closure: most grinders hold the lid shut magnetically, which keeps the seal tight while you twist.
• Herb compartment: sits below the chamber and catches the ground material through a mesh screen.
• Kief catcher: the bottom compartment on three- and four-piece grinders, collecting the fine powder that falls through the screen.
• Scraper: the small tool that usually ships with the grinder, for lifting kief off the base.

What you need

• Isopropyl alcohol, 90% concentration or higher
• Cotton swabs or a small brush
• Paper towel or a clean cloth
• A toothpick or small scraper
• A small bowl or container

Step 1 — take it apart

Separate the grinder into its individual pieces. Tip out any loose material first and set aside anything in the kief catcher before it goes near the alcohol.

Step 2 — soak

Put the parts in a bowl and pour in enough isopropyl alcohol to submerge them. Leave them for thirty minutes to an hour. The alcohol dissolves the resin so you are not scraping at hardened buildup.

Step 3 — scrub

Work over each piece with a swab or brush dipped in alcohol, paying attention to the base of the teeth and the threads, where residue collects. A toothpick reaches the corners a brush cannot.

Step 4 — rinse and dry

Rinse everything under warm water to carry off the alcohol and loosened residue, then dry each piece thoroughly. Any moisture left in the threads invites corrosion and mould.

Step 5 — reassemble and test

Once completely dry, put it back together, check the pieces seat properly, and run a small amount through to confirm it turns freely.

Keeping it clean

• Clean regularly rather than waiting for it to seize — resin is far easier to remove before it hardens.
• Avoid harsh or abrasive cleaners, which can pit the metal and damage anodised finishes.
• Clean the screen with a soft brush; a clogged mesh is the usual reason kief stops collecting.
• Check for damage now and then — bent teeth, loose threads or the beginnings of rust.
• Store it dry, away from heat and humidity.
• A coin in the kief chamber helps shake stuck powder loose through the screen.

Ordering from DankBros

DankBros is a mail-order service. Orders are dispatched with Canada Post Xpresspost and normally arrive within 2–5 business days of processing. Parcels go out in plain, odour-sealed packaging with no external branding, and a tracking number is emailed once the order ships. Browse the catalogue.

Legal age

Cannabis is legal for adults in Canada under the Cannabis Act (2018). You must meet the minimum legal age in your province — 19 in most provinces, 18 in Alberta and 21 in Quebec. Age is verified at checkout.

Frequently asked questions

What is the best thing to clean a weed grinder with?

Isopropyl alcohol at 90% concentration or higher. It dissolves resin without damaging metal grinders.

How often should I clean my grinder?

Whenever it starts turning stiffly or you can see buildup. Cleaning before resin hardens takes far less effort.

Can I use water instead of alcohol?

Water alone will not dissolve resin. It is useful for rinsing after an alcohol soak, but not as the cleaner itself.

How do I get kief out of the bottom chamber?

Use the scraper that came with the grinder, and shake a clean coin in the chamber to loosen powder stuck in the screen.