Tool Guide

AeroStop

Name: AeroStop
Brand: Brew Supply

AeroStop is a compact physical stop that makes the AeroPress press endpoint easier to repeat.

Testing

Open-source product

What AeroStop is

AeroStop is a compact physical stop that makes the AeroPress press endpoint easier to repeat.

The product-specific MakerWorld release, whitepaper, and how-to are public while hardware testing continues.

Download files AeroStop how-to guide

Problem It Solves

AeroPress recipes often rely on feel, sound, or estimation at the end of the press. AeroStop gives the endpoint a physical stop instead of leaving it fully to judgment.

Variable It Controls

AeroStop controls endpoint height by fixing where the plunger stops during the press.

How It Works

A base and booster stack define a chosen stop height before the brew begins.
The brewer presses until the physical stop rather than guessing from sound or feel alone.
That fixed endpoint can then be held constant or adjusted deliberately between tests.
The same stop can be revisited across multiple brews so endpoint changes become deliberate instead of accidental.

When To Use It

When you want a simpler endpoint-control tool than AeroBox.
When portability matters in travel kits and competition practice setups.
When the main question is where the press stops rather than how the full press curve behaves.

What It Does Not Solve

It does not measure flow rate or live output.
It does not replace sensory dial-in.
It is less measurement-rich than AeroBox when press analysis is the main goal.
It does not guarantee the chosen endpoint is ideal; it only makes the endpoint easier to repeat.
It does not remove the need to decide whether a given endpoint still suits the coffee and recipe goal.

Print And Material Guidance

The base measures 5.6 × 8.5 × 1.8 cm (2.20 × 3.35 × 0.71 in). Each booster measures 8.6 × 5.6 × 0.2 cm (3.39 × 2.20 × 0.08 in); print at least four boosters.
The two release profiles are single-color and dual-color (the dual-color version shows the Brew Supply logo and icon). Both use the documented 0.2 mm and 0.4 mm nozzle options, 0.12 mm layer height, five top and bottom shell layers, Aligned Rectilinear infill at 90 degrees, and Bambu Studio's default 0.12 mm High Quality settings. Print every booster at 100% infill; supports are not required.
The current single-color 0.4 mm complete-set slice is approximately 4 hours and 86 g (0.19 lb).
For the two-color 0.4 mm profile, the base takes approximately 2 hours 30 minutes and 27 g (0.06 lb); four boosters take approximately 1 hour 45 minutes and 23 g (0.05 lb) total.
Use 100% infill for the base in the recommended profile and 100% infill for every booster. The base can use less; 15% cubic infill has been tested successfully.
Supports are not required. Use the final profile at 100% scale and check that no seam or first-layer expansion changes the plunger fit.
This release fits the Original AeroPress and AeroPress Clear, not AeroPress Go or XL.
Wipe each part with a moist towel, hand wash only when needed, and let the set air-dry completely. It is not dishwasher safe.

Version and status

Testing

Competition relevance

AeroStop is useful when a brewer wants to keep endpoint height fixed while testing grind, agitation, bypass, or service decisions under competition-like constraints.

Safety and trademark note

Brew Supply is independent and not affiliated with AeroPress or the World AeroPress Championship. Any printed press stop used around hot liquid and pressure must be checked for safe fit and safe handling.

Evidence boundary

AeroStop makes a chosen endpoint repeatable. It does not prove that the chosen endpoint is optimal or measure the full press curve.

How to evaluate a Brew Supply control tool

Start with the workflow problem, not the promise of a better cup

A useful precision tool should make one decision or physical action easier to repeat. The first test is therefore operational: can you describe what changed, hold the surrounding recipe steady, and return to the same setup on the next brew? Taste still matters, but taste should be evaluated after the tool has demonstrated that it controls the narrower variable it claims to address.

Compare the normal workflow with the tool-assisted workflow using the same coffee, dose, water, grind, timing, and service target wherever possible. Record mistakes and setup time as well as successful brews. A tool that creates a cleaner measurement but adds too much friction may be valuable for structured testing and unnecessary for everyday brewing. That tradeoff is part of the result rather than something to hide.

Do not change several Brew Supply tools at once when the goal is to learn what one of them contributes. Add the smallest useful control, repeat the comparison, and keep an exit path back to the simpler method. This makes the product easier to judge honestly and prevents a complete competition setup from becoming more complicated than the recipe needs.

What the status means

AeroStop is in active testing. Public documentation describes the current workflow and the claims Brew Supply is prepared to make, but testing status still means the design can change. Check the linked release hub and documentation for the current file, version, material notes, and limitations before printing or using it in a competition setup.

Open-source release discipline

Brew Supply separates an idea, a documented workflow, and a downloadable release. A landing page can exist before a file so the intended use and limitations are clear, but it must not turn a planned concept into an availability claim. When files are published, the download destination—not an old screenshot or copied model—is the authority for the current version. Feedback is most useful when it names the version, printer and material, fit, workflow conditions, observed failure, and whether the result could be repeated.

Before printing, check whether the linked hub actually contains the named product and whether its version matches the documentation you are reading. A profile link is a discovery destination, not proof that every concept or testing prototype on this site already has a downloadable file. Pages keep the unavailable state visible until a product-specific release destination exists.

Keep the original method available during testing. If a printed part does not fit, clean easily, survive the intended temperature, or make the workflow easier to explain, stop using it and record the failure before changing the model. Open-source iteration improves when unsuccessful conditions are documented as carefully as successful ones.

Competition legality is a separate check. Review the current event rules and confirm the exact printed version before adding any accessory to a competition kit.

FAQ

Why is the route called press-stop if the tool is named AeroStop?

AeroStop is the product name. The route uses press-stop because that phrase directly matches the problem many brewers are searching for: a repeatable AeroPress press stop.

Does AeroStop prevent the hiss?

AeroStop can help a brewer stop before the hiss when the chosen endpoint height is set accordingly, but the deeper idea is endpoint control rather than only hiss avoidance.

Documentation And Source Links

AeroStop how-to guide

Printing, setup, and calibration guidance for AeroStop.

Read the AeroStop how-to guide

AeroStop whitepaper

Technical context and evidence boundaries for endpoint control.

Read the AeroStop whitepaper

AeroStop on MakerWorld

Download the AeroStop files and tested print profiles.

Open AeroStop on MakerWorld

Join the Brew Supply tester roster

Use the tester form to follow and help validate future releases.