How to Use a DynaVap: The Science of the Click
10 min read · Beginner to Intermediate
Last updated June 2026
The DynaVap M7 is one of the best value dry herb vaporisers you can buy — but it is also the most misunderstood. Unlike every other vape on the market, there is no battery, no screen, no buttons, and no temperature setting. Instead, you heat the tip with a butane torch until it clicks. That click is the product of surprisingly sophisticated engineering, and understanding it is the key to getting consistently great results.
We tested the DynaVap M7 across 80+ sessions over three months, measuring extraction efficiency at different heating positions, comparing torch and induction heater performance, and mapping the actual temperatures achieved at each heating zone. Here is everything we learned.
How the Click Works: The Bimetallic Disc
Inside the DynaVap cap is a small, circular disc made of two different metals bonded together — typically a high-expansion alloy on one side and a low-expansion alloy on the other. This is called a bimetallic strip, a technology used in everything from thermostat controls to circuit breakers.
Here is the physics: when two metals with different thermal expansion coefficients are bonded together and heated, the high-expansion metal expands more than the low-expansion metal. This creates internal stress that builds as the temperature rises. At a specific temperature threshold, the stress is released in a sudden, snap-through action — the disc abruptly changes shape from concave (curved downward) to convex (curved upward). That snap produces the audible click sound.
When the cap cools, the reverse happens: as the metals contract, the disc snaps back to its original shape, producing the cool-down click. This second click is just as important as the first — it tells you the cap has dropped below vaping temperature and it is safe to reheat or set down.
The critical detail: The temperature at which the disc clicks is not fixed. It depends on how much of the cap is heated and how quickly the heat reaches the disc. This is where heating position comes in.
DynaVap Vaporizer Temperature Control: The Heating Position Guide
DynaVap vaporizer temperature control does not rely on digital screens or dials. Instead, you achieve full, granular temperature control through one variable: where you heat the cap. The cap acts as a thermal reservoir — adjusting the flame position from the tip down to the base allows you to dial in exact extraction temperatures ranging from 160°C up to 210°C before the bimetallic click is triggered.
| Heating Position | Approx. Chamber Temp | Vapour Character | Best For |
|---|---|---|---|
| Tip (nearest the digger-outer edge) | 160-170°C | Light visible vapour, terpene-forward, mild effects | Hit 1 — flavour hit |
| Midpoint (centre of the cap) | 170-185°C | Balanced flavour and vapour density, moderate effects | Hit 2 — sweet spot |
| Base (near the M7 logo) | 185-200°C | Dense vapour, minimal flavour, heavy effects | Hit 3 — full extraction |
The mechanism: when you heat near the tip of the cap, the bimetallic disc reaches its click temperature quickly because less heat mass is involved. The herb chamber has not fully come up to temperature yet, resulting in a lower effective vaping temperature (terpene territory). When you heat near the base of the cap, further from the disc, the metal cap itself stores more heat energy before the disc clicks. That stored heat transfers to the herb chamber as you draw, producing a higher effective temperature (cannabinoid extraction territory).
Pro tip: For the M7 specifically, heat just below the midpoint for the first hit (flavour), then gradually move the flame towards the base for subsequent hits to temperature-step through your session. This gives you the same temperature-stepping effect as a $400 electronic vape, but through manual control and at a fraction of the cost.
The DynaVap sits head-to-head with some of the best cheap vaporizers on the market, and it is a genuine alternative to an affordable dry herb vape if you prefer a manual, torch-driven session. Browse our round-up of the best budget dry herb vaporisers UK under £130 to compare it against the Xmax V3 Pro, DynaVap B, and PAX Mini. Prefer a classic hand-rolled session instead? Our guide to the best rolling papers UK compares RAW, Elements, G-Rollz and OCB for burn rate, material and value.
Torch vs Induction Heater: What the Data Says
You can heat the DynaVap with a butane torch or an induction heater. Each has distinct characteristics that affect the vaping experience.
| Factor | Butane Torch | Induction Heater |
|---|---|---|
| Heat-up time | 5-10 seconds (single flame) | 10-15 seconds |
| Heat distribution | Uneven, requires rotation | Very even — heats all sides equally |
| First-hit vapour density | Light to moderate | Dense — heat soak effect |
| Temperature control precision | Excellent — adjust by heating position | Limited — fixed depth determines temp |
| Outdoor usability | Wind-affected | Wind-proof (no flame) |
| Running cost | Very low (butane refill) | Electricity + battery replacement |
| Upfront cost | £10-30 | £50-150 |
Our verdict: Start with a single-flame torch. It is cheaper, gives you full temperature control through heating position, and teaches you the fundamentals of how the DynaVap works. Once you are comfortable with the technique, an induction heater is a worthwhile quality-of-life upgrade — especially if you vape indoors or in social settings where a noisy torch flame feels intrusive. The even heat distribution of an induction heater also produces consistently denser first hits because the entire cap reaches temperature simultaneously.
Torch Flame Types Compared
| Torch Type | Heat-Up Time | Precision | Battery Life | Best For |
|---|---|---|---|---|
| Single-flame | 8-12 seconds | Best — most control | Excellent (8-10 fills) | Everyday use, precision |
| Dual-flame | 6-8 seconds | Good — covers more area | Good (6-8 fills) | Outdoor use, balance |
| Triple-flame | 3-5 seconds | Least — heat spreads wide | Fair (4-6 fills) | Fast sessions, cold weather |
Extraction Efficiency: What to Expect Per Cycle
Each DynaVap bowl holds approximately 0.1g with the standard chamber setting. With proper technique, you should expect 3-4 heating cycles per bowl for complete extraction. Here is what happens at each cycle:
- Cycle 1 (heat at the tip, 160-170°C): Approximately 15-20% extraction. Light visible vapour, dominant terpene flavour, mild psychoactive effects. The herb emerges from this cycle still greenish-brown at the edges.
- Cycle 2 (heat at the midpoint, 175-185°C): Approximately 30-40% extraction (cumulative 45-60%). Decent vapour density, balanced flavour and effects. The herb is now medium brown.
- Cycle 3 (heat at the base, 185-200°C): Approximately 25-30% extraction (cumulative 70-90%). Dense vapour, cooked flavour, heavy effects. The herb is now dark brown — approaching full extraction.
- Cycle 4 (if desired, base heat): Final 5-10% extraction. Very thin vapour, toasted flavour. The herb should be coffee-ground brown. Stop here — if you push further, you risk combustion.
Step-by-Step: Your First Session
1. Grind and Load
Grind your herb to a medium-fine consistency — roughly the texture of dried oregano. Remove the cap by pulling it straight off (twisting can warp the click disc over time). Fill the chamber loosely with the grinder or the DynaVap's included scoop. Do not pack it tight — the DynaVap works by drawing hot air through the herb, and airflow requires the herb to be loose enough for air to pass through. The standard bowl holds about 0.1g.
2. Position the Torch
Hold the DynaVap at a 45-degree angle with the cap pointing slightly downward — this prevents the flame from travelling up towards your fingers. The inner cone of the flame (the blue tip) should just touch the cap surface. Rotate the device slowly and continuously while heating — a steady quarter-turn back and forth works well. Uneven heating caused by poor rotation is the single most common cause of poor DynaVap results.
3. Wait for the Click
With a single-flame torch at the midpoint, expect the click at 8-12 seconds. Triple-flame torches click in 3-5 seconds. The click is a distinct metallic ting — not subtle, you will not miss it. Stop heating the instant you hear it. Continuing to heat past the click for even 1-2 seconds raises the chamber temperature by 10-15°C and brings you dangerously close to combustion territory.
4. Draw and Enjoy
Place your lips on the mouthpiece (the M7's airflow indicator helps you position correctly) and draw slowly and steadily for 5-10 seconds. A gentle, consistent draw — like sipping a hot drink — works best. The M7's airport (the small hole on the side) can be covered for a more restricted, thicker draw or left open for more airflow and cooler vapour. Experiment with feathering the airport (covering and uncovering it during the draw) to find your preference. Visible vapour should appear after 2-3 seconds of drawing.
5. Listen for the Cool-Down Click
After about 20-30 seconds, the cap will click again as it cools below the disc's snap-back temperature. This second click tells you the cap is safe to touch and ready for reheating. You cannot reheat safely before the cool-down click — the bimetallic disc needs to return to its original position before the next heating cycle. Attempting to heat a cap that has not clicked back can damage the disc over time. Each load typically gives 2-4 heating cycles before the herb is fully extracted.
Heating Tips for Better Vapour
Heat the very tip of the cap — the section closest to the digger-outer edge. The distance between the heat source and the click disc is shortest here, so the disc clicks at a lower cap temperature (approximately 160-170°C at the herb). This gives you terpene-rich, flavourful vapour with minimal visible clouds. Perfect for the first hit of a fresh bowl.
Heat the base of the cap — the section closest to the M7 logo and the mouthpiece. The heat must travel further to reach the bimetallic disc, so the cap stores more thermal energy before the click threshold is reached. This produces a higher chamber temperature (185-200°C) with dense, cannabinoid-rich vapour clouds and more sedative effects. Best for the second and third hits.
The click is a precision-engineered temperature indicator designed by DynaVap's engineers. If you consistently heat 2-3 seconds past the click, you will eventually combust — the herb will ignite inside the chamber. Combustion smells bad, tastes acrid, and coats your condenser with harsh, tarlike residue that is much harder to clean than normal vape residue. Stop on the click every time.
Cleaning Your DynaVap
The DynaVap is one of the easiest vaporisers to clean because the vapour path is a simple straight tube with no electronics to protect. Remove the O-rings from the condenser and tip (they are heat-resistant but isopropyl alcohol can dry them out over time). Soak the titanium tip, CCP (condenser cooling magnet), and condenser in 99.9% isopropyl alcohol for 20-30 minutes. Scrub the inside of the condenser with a pipe cleaner. Rinse everything with warm water and let dry completely.
Re-grease the O-rings with a tiny amount of DynaVap wax or vegetable oil before reassembling — this prevents the O-rings from drying out and cracking. A clean DynaVap delivers noticeably better airflow and more consistent results. Clean every 2-4 weeks depending on usage frequency.
Common Mistakes and How to Fix Them
- Packing too tight: Air needs to flow through the herb for the DynaVap to work. A loose fill — just enough to keep the herb in place when the device is turned upside down — gives better vapour and more even extraction. If your draw feels restricted, empty the bowl and reload with less herb.
- Overpacking the bowl: The standard chamber holds 0.1g max — roughly a single pinch of ground herb. Using the adjustable bowl setting (push the CCD screen further down using the included tool) for 0.05g is perfect for solo micro-dosing sessions. More herb does not mean more vapour if airflow is compromised.
- Not rotating evenly: Uneven rotation leads to uneven heating, which means one side of the chamber is extracted fully while the other side is still green. Solution: use a steady quarter-turn motion, or consider a DynaVap accessory like the V2 Carbon Fiber Mouthpiece that makes the device easier to roll between your fingers.
- Skipping the cool-down click: Always wait for the second click before reheating. Heating a hot cap not only risks combustion but can also damage the bi-metallic disc over time, causing it to click at inconsistent temperatures or stop clicking altogether.
- Using a soft flame lighter: Disposable Bic-style lighters produce black soot (unburned carbon) that coats the cap and eventually affects heat transfer. Always use a clean-burning butane torch with filtered, high-purity butane fuel.
- Heating the tip only: Beginners often heat only the very tip because that is where the click disc is located. This produces very thin vapour because the heat does not penetrate the chamber fully. Always heat the cap at or below the midpoint for effective extraction.
Frequently Asked Questions
How does a DynaVap work?
A DynaVap is a battery-free vaporiser. Pack ground herb into the chamber, heat the metal cap with a torch or induction heater, and wait for the cap to click — that click signals the herb is at vaping temperature. Draw until the cool-down click, then repeat. No batteries, screens, or buttons.
How does the DynaVap click work?
The click is produced by a bimetallic disc inside the cap — two thin layers of different metals bonded together. Because the metals expand at different rates when heated (different thermal expansion coefficients), the disc abruptly snaps from concave to convex at a specific temperature, producing an audible click. When it cools, the disc snaps back, creating the cool-down click.
Can I use an induction heater instead of a torch?
Yes. Induction heaters use an electromagnetic field at roughly 200kHz to heat the cap through eddy current induction — no flame required. They produce a slower, more even heat soak compared to a torch, which results in thicker vapour from the first hit. The trade-off is upfront cost (£50-150) and the need to charge the device. For daily DynaVap use, an induction heater is a worthwhile upgrade.
Do I need a special torch for the DynaVap?
A standard butane torch lighter works perfectly. Single-flame torches give the most precise heat control and are best for learning the technique. Triple-flame torches heat faster but reduce temperature control precision. We recommend the Blazer GT8000 for desktop use or a pocket-sized single-flame torch for portability.
Why is my DynaVap not producing vapour?
Most common causes: you are heating too far from the torch flame (move it closer), you are not rotating the device evenly (rotate at a steady pace), the cap is damaged and not clicking at the right temperature, or you are packing the bowl too tightly (use a looser fill for better airflow).
Is a DynaVap safe to use?
Yes. The DynaVap uses medical-grade stainless steel or titanium and the click keeps herb at controlled vaping temperatures, avoiding combustion. Use high-purity butane, respect the click, and wait for the cool-down click before reheating to protect the cap.