The Power Roaster: Functionality Over Form in Home Coffee Roasting
Introduction
Hello, coffee lovers. I’m Pak Kopi, and this is another segment of Coffee Truth. We are currently in our Kickstarter campaign, along with another coffee roaster, manufacturer, or designer—we’re still figuring out exactly which label fits best. Our goal is to highlight the design differences between our machine, the Power Roaster, and their competing product. After closely examining their campaign, we have determined that they likely possess a 3D-printed model of a design that has supposedly won awards. However, they have not demonstrated the actual function of their machine in action.
Demonstrating Real-World Performance
To counter this, we have produced a continuous video featuring live roasting demonstrations. These videos allow viewers to see the entire process from green to roasted beans, proving that our machine works. Our technology has been functional since we debuted in August 2017 at the Singapore Coffee Festival.
In contrast, the presentation videos provided by our competitors show roasted coffee beans being blown around the chamber, with no indication that actual roasting is taking place. There are two main issues we observe in their footage: roasted coffee being blown around and green coffee being blown around. We believe the latter could easily be achieved by simply using a fan to blow the coffee inside the chamber without a heating element. For coffee to roast, it must reach temperatures exceeding 200 degrees Celsius. If their device is indeed a 3D-printed model, we doubt it could withstand such intense heat. We challenge them to produce a similar continuous roasting video, as we do not believe their machine is capable of functioning as advertised.
Airflow Mechanics: The Popcorn Machine Comparison
To explain one of the primary reasons for the design disparity, consider a hot air popcorn machine. While these machines function reasonably well, they have specific design requirements. The airflow in a hot air popcorn machine enters through vents located at the bottom of the unit. Because popcorn kernels are roughly half the weight of coffee beans, they require significantly less airflow to suspend and roast. Coffee beans, being heavier, demand a much stronger airflow to be lifted and roasted effectively.
When we initially tested a similar design placed flat on a counter with very short legs, the machine failed because there was insufficient airflow. We discovered that raising the machine up allowed air to circulate properly through the bottom, significantly improving performance. This suggests a potential design flaw in competitors’ machines: if they rely on a design similar to a standard popcorn popper sitting flat on a table, they may not generate enough airflow for coffee roasting.
Our Design Solution
Our machine was designed with functionality as the primary priority. We could not make our unit sit flat, so we engineered cutouts in the legs on three sides. These openings enable airflow to be sourced from the outside environment, ensuring the necessary air circulation for roasting. Even when these cutouts were made lower than they currently are, the machine did not perform as well. We had to meticulously adjust these dimensions to ensure optimal performance.
Functionality First
This leads to a crucial lesson: a nice design is not enough. The machine must function correctly first; it must roast coffee effectively. Only secondarily can we focus on aesthetic refinement. It is frustrating when a campaign launches with a great-looking design but promises that functionality will be worked on later. This reminds us of another Kickstarter campaign involving a coffee roaster that raised significant funds but ultimately failed to deliver on its mission.
Conclusion
We strongly believe that we have created the best home roasting machine available. We encourage you to support our Kickstarter campaign, make a pledge, and share this with your friends. Our backers receive a one-year warranty, and we are committed to standing behind our product. Thank you for sticking with us. We will continue to discuss other important topics as our campaign heats up.
Pak Kopi, signing off.
