Inside the Power Roaster: A Deep Dive into Design and Evolution
Hello, coffee lovers. I’m Pak Kopi, and welcome to my Power Roaster explanation series. In this video, I am walking you through the specific details and design considerations we have made, and are continuing to make, for our Power Roaster.
For those following our journey, our current Kickstarter campaign remains open until April 24th. The videos featured here represent the first demonstration of our prototype. As you can see in the footage, this initial model features a glass chamber attached via a hose clamp. While this early prototype functioned well, it was never intended for market release. We invested significant resources into the machine’s internals and overall design, making it clear that a hose clamp was merely a temporary solution for prototype purposes. The only way to secure the glass and chamber together at that stage was with a clamp, but we knew we needed a better solution for the final product.
Upgrading the Glass Chamber
To move beyond the prototype stage, we decided to change both the material and the manufacturing method of the glass. Our initial attempts involved hand-blown glass, where we produced perhaps three dozen pieces in Bali. However, we encountered several challenges with this approach. Consequently, we shifted our focus to borosilicate glass.
This new material offers distinct advantages:
- Strength and Thinness: Borosilicate glass is significantly stronger yet thinner than standard glass.
- Consistency: It is manufactured more evenly, ensuring a uniform product.
- Visibility: The clarity allows you to easily observe the color changes of the coffee beans while they are roasting.
Redesigning the Chamber Shape
Beyond the glass material, we also overhauled the chamber’s shape and design. The initial chamber resembled the typical popcorn popper chambers found on the market, but we found that the chamber’s geometry is critical. The chamber dictates the air flow within the machine, meaning the right shape, design, and angles are essential for optimal performance.
Through extensive exploration of different prototype machines, we developed a new chamber design. This updated chamber features a slightly larger diameter at the very top. This specific design allows the borosilicate glass to slip in and fit perfectly. The result is a chamber with a consistent internal diameter that sits flush, ensuring the glass fits securely without the need for a hose clamp.
A Sleek New Handle Design
While the new chamber eliminates the need for a hose clamp, the unit still requires a handle for safely lifting and pouring the roasted coffee. The prototype featured a simple plastic handle that served a functional purpose but lacked aesthetic appeal.
For the final product, we are introducing a beautifully designed, sleek handle that runs the entire length of the borosilicate chamber. This handle is secured by a metal band in two key locations: one at the indentation of the chamber and another at the very top of the glass chamber.
This design ensures the handle is not just clamped on hard between the metal and glass, but is instead secured snugly and nicely. This approach improves both form and function, allowing you to easily pick up and pour the coffee.
Final Thoughts
We are incredibly excited about this new chamber design. While there will be some further tooling costs associated with other small design changes, we have come too far to compromise on quality. Our commitment remains unwavering regarding the importance of design and function. We want the Power Roaster to be sleek, modern, and contemporary.
We want coffee enthusiasts to be proud to show off their new home roaster to friends, confident that it works perfectly and looks great on the kitchen counter.
If you are interested in building your own, please check out the Kickstarter campaign. It is still available until April 24th, where you can secure a special discount and free shipping—benefits we cannot offer after the campaign concludes.
Thank you for watching. This is Pak Kopi Coffee University. See you next time.
