Prototype All-Metal 1-Piece Exhaust Adapter for Aillio Bullet

Coffee Talk Equipment
1

Hey everyone,

I wanted to share a project I’ve been working on improving on the Exhaust Adapter for the Aillio Bullet.

My Brother in Law and I built a prototype exhaust adapter modeled directly after the original schematics provided by Aillio. Unlike multi-part or 3D-printed plastic setups that can warp under heat, this is a solid, one-piece metal design.

Key Highlights:

  • One-Piece Metal Construction: Built as a single solid piece to eliminate leaky joints, structural flexing, or melting concerns that often come with multi-part 3D-printed designs.
  • Airflow Performance: During test roasts, I haven’t seen any signs of airflow throttling or backpressure issues.
  • Smoke Control: It directs exhaust cleanly into the ducting, keeping ambient smoke to an absolute minimum in the roasting space.

I brought this prototype along to the Los Angeles Coffee Fest recently and showed it to a few fellow roasters. There was some solid interest from folks who saw it in person, so I’m making this post to gauge broader community interest online.

If there’s enough community demand, I’m considering producing a small production run for Bullet owners looking for a robust, permanent exhaust adapter solution.

Let me know your thoughts, feedback, or any questions in the comments! Would this be something you’d want on your setup?

Exhaust Top 2
Exhaust Top 21920×1440 243 KB

Exhaust Front Close Up
Exhaust Front Close Up1920×1440 205 KB

protoype Exhaust
protoype Exhaust1920×1936 192 KB

2

Yea this looks amazing! When do you think you’ll have them and what would the cost be?

3

I like it! Count me interested. What is your timeline on these?

4

I would definitely purchase one of these at a reasonable price.

5

Looks really interesting especially if the design avoids restricting airflow or creating a backdraft. I’m definitely intrigued!

6

Thanks for all the great feedback and interest!

Here’s a quick update on where things stand:

  • Production Status: We’re officially in the final production phase. The final version will come in a sleek black finish to match the roaster’s aesthetics seamlessly.
  • Airflow & Performance: Keeping airflow unrestricted and eliminating backdraft risks was a top priority in this design, so you can expect solid draft performance without compromises.
  • Timeline: We are targeting completion by late November / early December—just in time for holiday orders.

I’ll post photos of the finished product and share finalized pricing details in a couple of weeks. Stay tuned!