The Coma

Herb never touches the gem bed in a ball vape, so the Coma stays clean in the places that matter as long as vapor is not pushed back down through it. What does get dirty is the Macro Bowl, its Everlasting screen and the glass joint, and with a bowl this size there is more residue than usual. The screens are thick perforated plates rather than mesh, so the holes need working through rather than a quick brush.

Quick Cleaning (After Each Session)

1. Lift the bowl off with the handle: Use the aluminium handle rather than gripping the bowl, and set it on its stand on the dock.
2. Empty and brush the bowl: Tip the spent material out and sweep the titanium walls with the supplied herb brush while the residue is still soft.
3. Clear the screen: Brush the perforated screen so air can still pull through it. A tightening draw almost always means the holes are loading up.

Deeper Cleaning (Every Few Sessions)

1. Let everything cool first: The heater and bowl hold heat for a long time after a session, and isopropyl near hot metal is a bad idea.
2. Take the screen out: Lift it clear of the bowl so both sides can be reached. Rotating spare screens in keeps you running while one soaks.
3. Soak the screen and bowl parts: Isopropyl alcohol lifts what the brush cannot. Reviewers found soaking easier than picking at the holes with a brush, so give it time rather than force.
4. Clean the glass joint separately: Pull the 14mm or 18mm joint and soak it on its own, then rinse with warm water and dry it fully before refitting.
5. Check the o-rings: Take them out before soaking and swap them once a joint stops seating tightly. A spare set comes in the kit.
6. Wipe the heater and dock: A dry or barely damp cloth on the titanium heater and the octagonal dock plate is enough. Nothing wet goes near the PID or the heater cable.

Care Tips for Better Results

• The gem bed rarely needs attention unless vapor has been pushed back into it. Carb your draws and avoid overpacking and it stays clean.
• Do not overfill the bowl just because it holds 1.6g. Airflow through the material is what makes convection work.
• A medium grind gives the best balance here. See our grind guide.
• Vices lists poor maintenance as a warranty exclusion, so keeping the screens and joint clear is not just about flavour.
• Keep liquid away from the PID and the heater plug, and only use the controller supplied with the kit.
• For general technique, read our guide on how to clean a dry herb vaporizer.

The Coma is for people who already know what a heated ball bed does and want more of it. A 1.6g bowl is far beyond what a normal device handles, so this suits group sessions and heavy use rather than a quick solo bowl. Spreading that much material over a wide, shallow bowl means more of it sits close to the heat, which is why reviewers describe the flavour as clean with no metallic edge even at large loads. Being wired to a PID rather than sitting on a wireless coil also means you set a number and it holds there, so the roast is repeatable in a way torch heated gear never is. Our ball vape explainer covers why the gem bed matters, and the premium vaporizers list shows what else sits near this money.

The drawbacks follow from the same design. The bowl is physically large, and one reviewer found its lip collides with the rim of some bongs, so check your glass before assuming it will fit, and read our water pipe guide if you are building a setup around it. The Everlasting screens are thick perforated plates, which last but make cleaning the individual holes tedious, and they want attention every couple of days with regular use. The heater is tethered to the PID, so this stays on a table, and early buyers reported the heater head sticking to the stand post during the first heat up until Vices remade that part. If you want the same idea in a smaller, cheaper form, the Universal Baller or the Ditanium are more sensible daily devices.