Micro Hourglass Rig
Dab rigs & tools
by Groove
Groove Micro Hourglass Rig — Compact Borosilicate Dab Rig
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.
Why This Micro Hourglass Rig Earns Its Spot on the Shelf
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.
Honest Limitations — What to Know Before You Buy
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.
How to Use the Groove Micro Hourglass Rig
- Fill the chamber with water until the bottom of the fixed downstem is submerged by roughly 1 cm. Too much water and you'll get splashback at the mouthpiece; too little and you lose filtration. Start low, take a test pull without anything loaded, and adjust.
- Attach your banger or bowl to the joint. A quartz banger is the standard choice for concentrates — heat it with a torch until it glows faintly, then let it cool for 30–45 seconds (low-temp dabs sit around 260–315 °C for best flavour).
- Drop your concentrate onto the heated banger using a dab tool. A rice-grain-sized amount is a solid starting point — you can always go bigger once you know how the rig draws.
- Inhale slowly and steadily through the flared mouthpiece. The short vapour path means you don't need to pull hard. Let the water do the filtering work.
- Exhale, cap your banger if you're using a carb cap, and enjoy. Wipe the banger with a cotton swab while it's still warm to prevent carbon buildup.
Care and Maintenance for Borosilicate Glass Rigs
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.
