Dab rigs & tools
by Groove
The Micro Hourglass Rig is a compact borosilicate glass dab rig that delivers clean, flavour-forward vapour through a fixed downstem and pinched hourglass body. Built by Groove, it sits comfortably in one hand, filters concentrates through a short water path, and breaks down to almost nothing in a bag. If you want a daily driver for dabs that doesn't take up half your desk, this is the one we'd grab.
| Spec | Detail |
|---|---|
| Brand | Groove |
| SKU | HS2830 |
| Material | Borosilicate glass |
| Downstem | Fixed (integrated) |
| Shape | Hourglass silhouette |
| Mouthpiece | Flared rim |
| Joint type | Standard — fits most bangers and bowls |
| Size class | Micro / compact |
Complete your setup: pair this rig with a quartz banger for concentrates or a standard glass bowl for dry herb. A few pipe cleaners and some isopropyl-based glass cleaner will keep the fixed downstem running clear between sessions.
Most dab rigs fall into two camps: big scientific pieces that sit on a shelf like lab equipment, or cheap pocket rigs that feel like they'll snap the first time you set them down too hard. The Groove Micro Hourglass Rig lands right in the middle — and that's exactly where a daily rig should be.
The hourglass pinch isn't just for looks. Pick it up and you'll feel the narrowed waist lock into the space between your thumb and fingers. It's a natural grip point, and it means you're not white-knuckling a straight tube while you heat a banger. We've watched customers hold this one for the first time and immediately say "oh, that's nice" — it's the kind of thing you don't notice until you've used a rig that doesn't have it. The borosilicate glass has genuine weight to it without being heavy. Feels solid, not fragile. Tap the side with a fingernail and you get a clean ring, not a dull thud — that's how you know the glass wall thickness is decent.
The fixed downstem is the other design choice worth talking about. No removable parts means fewer things to lose, fewer joints to crack, and nothing rattling around in your bag. The trade-off? You can't swap it for a different diffuser style. Honestly, at this size, that doesn't matter. The short water path keeps vapour dense and flavourful — a longer path would cool things further but strip terpene flavour, which defeats the point of a concentrate rig this compact. The flared mouthpiece creates a gentle seal against your lips without you having to purse or strain. Small detail, big comfort difference over a session.
No product is flawless, and we'd rather you know upfront. The fixed downstem means cleaning requires a soak rather than a quick disassembly and rinse — you'll want isopropyl and coarse salt, or a dedicated glass cleaner, to dissolve concentrate residue inside the stem. It's a 10-minute job, not a 2-minute job. Also, because this is a micro rig, the water chamber is small. That means less water, which means less cooling. For concentrates at proper low-temp dabs, that's actually a positive — you keep the flavour. But if you're used to massive rigs with stacked percolators, the draw will feel warmer and more direct. That's the design intent, not a flaw, but it's worth knowing.
Compared to something like a silicone dab rig, the Groove is less forgiving if you knock it off a table. Borosilicate is tough — it handles thermal shock far better than soda-lime glass — but it's still glass. Treat it like glass. If you need something truly indestructible for festival season, silicone is the safer bet. If you want flavour clarity and a proper smoking experience at home or careful travel, glass wins every time.
Rinse the rig with warm water after every session. This takes 30 seconds and prevents residue from hardening inside the fixed downstem. Once a week — or whenever you notice the glass clouding — fill the chamber with isopropyl alcohol (90%+) and a tablespoon of coarse salt, cover both openings, and shake for 60 seconds. Rinse thoroughly with warm water afterwards. Avoid boiling water; borosilicate handles thermal shock well, but sudden extreme temperature changes can still stress the glass over time. Let it air dry upside down on a towel.
We've sold concentrate rigs in every shape and size since the early 2010s, and the ones that actually get daily use tend to be small, simple, and easy to clean. The Groove Micro Hourglass Rig ticks all three. It's not a showpiece for a collection shelf — it's the rig you grab without thinking because it works, it's comfortable, and it doesn't demand 15 minutes of maintenance after every use. The hourglass shape genuinely makes a difference in hand feel, and the flared mouthpiece is one of those "why doesn't every rig have this" details. If you're after a compact rig for concentrates that punches above its weight on flavour, this is the best small glass rig for daily dabs in our current lineup.
Just enough to cover the bottom of the fixed downstem by about 1 cm. Take a dry pull through the mouthpiece before loading anything — if water hits your lips, pour a bit out. The small chamber means the margin between "right" and "too much" is narrow.
Yes. Swap the banger for a standard glass bowl and you're set for dry herb. The short water path works well for both, though the compact chamber size means smaller bowls work best — don't pack it like a full-size bong.
It takes a standard joint size. Check the joint diameter when you receive the rig and match your banger or bowl accordingly. Most quartz bangers and glass bowls in common sizes will fit without issue.
Significantly. Borosilicate glass has a low thermal expansion coefficient — roughly 3.3 × 10⁻⁶/°C compared to about 9 × 10⁻⁶/°C for soda-lime glass. That means it handles heat from a torch without cracking. It's still glass, though, so drops onto hard surfaces will break it.
Fill the chamber with 90%+ isopropyl alcohol and coarse salt, cover both openings with your hands or cling film, and shake vigorously for about 60 seconds. The salt acts as an abrasive against the residue. Rinse with warm water until the alcohol smell is gone. Weekly cleaning keeps the downstem clear.
It's one of the better options for travel precisely because of its compact size and lack of removable parts. No loose downstem to rattle around or snap off. Wrap it in a microfibre cloth or small padded case and it'll handle a bag without drama.
Not necessarily. Less water means less cooling, but it also means less flavour loss. For concentrates especially, a short vapour path preserves terpene flavour. If you dab at low temperatures (260–315 °C), the draw from this rig is smooth and flavourful rather than harsh.
Last updated: April 2026
