After the original Twisty Glass Blunt was launched, its unique twist-to-advance mechanism attracted attention from users around the world. One of our product videos on YouTube received more than 45 million views, introducing millions of people to a different idea: instead of using rolling papers, they could load, advance, and use the product simply by rotating the internal spiral.

The original Twisty Glass Blunt has been proven through years of real-world use. Its metal mouthpiece contains eight separate airflow channels that provide stable airflow, while the removable glass tube and metal spiral are relatively easy to clean.

However, after customers had used the product repeatedly over longer periods, we began to notice a more specific issue: the glass tube and metal spiral were easy to clean, but maintaining the eight individual channels inside the metal mouthpiece required more time.

When developing the Twisty Glass Blunt Gen 2, we did not simply enlarge the original eight outlet holes. Instead, we redesigned the entire glass blunt airflow system and replaced the multi-channel structure with a more concentrated, easier-to-clean central T-shaped airflow channel.

This redesign focused on one specific question: How could we maintain smooth airflow while making glass blunt cleaning and routine maintenance easier?

What Happened to the Original Eight-Channel Airflow System Over Time?

The metal mouthpiece of the original Twisty Glass Blunt contains eight separate airflow channels. During use, airflow travels from inside the glass tube into the metal mouthpiece and then exits through the eight holes on the end of the mouthpiece.

This eight-channel airflow design distributes the airflow and provides a relatively consistent draw. When the product is new, the multi-channel structure usually does not present any noticeable cleaning problems.

After repeated use, however, small particles and residue can gradually enter the metal mouthpiece and collect inside the eight channels or around their outlet holes.

Because each channel is relatively narrow, accumulated residue can gradually reduce the effective airflow area. As a result, users may notice that the draw is no longer as smooth as before or that the resistance has increased.

At that point, cleaning only the glass tube or wiping the metal spiral may not fully solve the problem because the residue restricting the airflow is located inside the mouthpiece.

To clean the original Twisty Glass Blunt mouthpiece thoroughly, the user must use a small brush to clean each of the eight individual channels.

The process is manageable, but each outlet hole must be located and cleaned individually to remove particles and buildup inside the channel. Compared with rinsing the glass tube or wiping the removable metal spiral, maintaining eight separate channels requires more time and patience.

This was the real issue we identified through long-term use and customer feedback: the original Twisty Glass Blunt provided stable airflow, but its eight separate channels made mouthpiece cleaning more time-consuming.

How Customer Feedback Changed the Gen 2 Airflow Design

During product development, we test dimensions, airflow, assembly, and structural stability. However, some issues only become apparent after customers have used a product for several months or even longer.

The feedback we received after launching the original Twisty Glass Blunt was not that the entire product was difficult to clean. In fact, most users could easily maintain the glass tube and metal spiral:

The transparent glass tube makes it easy to see whether the interior is clean.

The transparent glass tube makes it easy to see whether the interior is clean.

l The transparent glass tube makes it easy to see whether the interior is clean.

l The removable metal spiral can be wiped down directly.

l The eight separate channels inside the metal mouthpiece are easier to overlook.

l Without regular cleaning, residue can gradually accumulate inside some of the channels.

l During a deep cleaning, all eight channels must be cleaned individually with a small brush.

This feedback helped us understand that the problem was not simply a lack of proper glass blunt cleaning instructions. The original airflow structure contained too many areas that needed to be maintained separately.

Without changing the structure itself, providing a smaller brush or more detailed cleaning instructions would not eliminate the need to clean all eight channels individually.

For this reason, when developing the Twisty Glass Blunt Gen 2, we decided to redesign the airflow path itself instead of making a minor adjustment to the size of the original holes.

Why Didn’t We Simply Enlarge the Eight Outlet Holes?

At first, enlarging the eight outlet holes appeared to be the simplest solution. Larger holes would be less likely to become restricted by residue and would provide easier access for cleaning tools.

In practice, however, designing a glass blunt airflow system is not that simple.

The size of each outlet hole directly affects airflow speed, draw resistance, and the structural strength of the metal mouthpiece. Simply enlarging all eight holes would not necessarily produce more balanced airflow and could change the familiar draw of the original product.

The number and size of the holes also affect how much material must remain inside the mouthpiece. Increasing the diameter of multiple openings leaves less material to support the structure and may make manufacturing and quality control more difficult.

This was especially important because the Twisty Glass Blunt Gen 2 uses a natural wood mouthpiece. Wood and metal behave differently during manufacturing, so the hole locations, quantity, and dimensions used in the original metal mouthpiece could not simply be copied into the wooden version.

Metal is relatively dimensionally stable, while natural wood can be affected by grain direction, machining methods, and environmental humidity. Machining multiple small holes into a solid wood mouthpiece would add production steps and require the position, angle, edge condition, and surrounding wall thickness of every hole to be inspected.

Enlarging the original eight outlet holes would not reduce the number of areas requiring maintenance or resolve the underlying complexity of the airflow system.

What we needed was not a larger eight-channel system, but a more direct, concentrated, and easier-to-maintain glass blunt airflow design.

How Does the Twisty Glass Blunt Gen 2 T-Shaped Airflow Channel Work?

After revising the internal structure, we selected a central T-shaped airflow channel for the Twisty Glass Blunt Gen 2.

During use, airflow travels through the glass tube into the metal connector. It then passes through the openings on both sides of the metal component, enters the wooden mouthpiece, and merges into the central channel before exiting through the top of the mouthpiece.

The complete Twisty Glass Blunt Gen 2 airflow path is:

Inside the glass tube → Metal connector → Openings on both sides of the metal component → Central channel inside the wooden mouthpiece → Top outlet

Compared with the eight separate airflow channels in the original design, the Gen 2 airflow path is more concentrated and direct, with fewer areas that need to be cleaned separately.

Although this change may appear simple, it addresses several issues related to routine glass blunt maintenance.

First, users no longer need to locate and clean eight individual channels one by one.

Second, the openings on both sides of the metal component connect directly to the central channel inside the wooden mouthpiece. Users can clean these areas with the included double-ended cleaning brush and remove accumulated particles and residue from the airflow path.

Third, the centralized airflow path makes product inspection more straightforward. After assembly, we can directly verify that the two side openings and central channel are unobstructed instead of inspecting eight separate channels.

For users, the most noticeable improvement is that there are fewer and more clearly defined areas to clean. For manufacturing and quality control, the Gen 2 airflow structure is also easier to inspect.