Tool Guide

BeanSieve

Name: BeanSieve
Brand: Brew Supply

BeanSieve is a whole-bean sizing workflow that makes dose composition more intentional before grinding.

Testing

Open-source product

What BeanSieve is

BeanSieve is a whole-bean sizing workflow that makes dose composition more intentional before grinding.

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

Download files Open BeanSieve calculator

Problem It Solves

A weighed coffee dose can still be physically inconsistent if the mix of bean sizes changes from brew to brew. BeanSieve makes that hidden difference visible before grinding.

Variable It Controls

BeanSieve helps control the whole-bean size profile that enters the grinder and therefore the physical makeup of the dose before extraction begins.

How It Works

Roasted coffee is separated into retained size fractions.
Each tray is weighed so the sample’s size profile becomes visible.
The BeanSieve calculator turns those tray weights into matched or intentionally shifted dose plans.
Prepared doses then stay visible as receipts so the next dose can be planned from what is actually left.

When To Use It

When you want recipe tests to start from a steadier physical dose baseline.
When limited competition samples need to teach something with each brew.
When you want to compare coffees or recipe changes without letting dose composition drift unnoticed.

What It Does Not Solve

It does not measure extraction, taste, roast color, or density by itself.
It does not guarantee a better cup in every context.
It does not replace good grinder, water, and dial-in decisions.
It is less useful if the brewer does not intend to compare brews carefully enough for dose composition to matter.
It does not eliminate weighing discipline; the workflow still depends on accurate tray entry, honest sample handling, and careful follow-through during dose planning.

Print And Material Guidance

The complete release contains 12 distinct parts across 12 print jobs/plates: eight aperture trays, top and lid components, and two BeanSieve-specific AeroSweep pieces—one smooth and one ridged.
The PLA/PETG release uses a 0.4 mm nozzle and does not require supports. Single-color and dual-color profiles are available; the dual-color version highlights every tray number and aperture size.
The complete set was originally tested on the Bambu Lab P2S and fits current Bambu Lab printers except the A1 mini.
The single-color profile takes approximately 2 days 10 hours and 1,506 g / 1.506 kg (3.32 lb) of filament. The dual-color profile takes approximately 3 days 2 hours and 1,970 g / 1.970 kg (4.34 lb).
Print every tray at 100% scale, preserve the profile orientation, and keep apertures and stacking surfaces free from warping, strings, or first-layer expansion.
For parts used around coffee, avoid a brass nozzle. Prefer a dedicated stainless-steel nozzle and PLA or PETG whose manufacturer documents food-contact suitability; the finished print still depends on printer cleanliness, surface finish, use, and cleaning.
Prefer a moist towel or gentle hand washing and let every tray air-dry completely. BeanSieve is not dishwasher safe.

Version and status

Testing

Competition relevance

BeanSieve matters most when brewers need a matched starting point across a sequence of AeroPress brews and want the grinder input to stay more intentional.

Safety and trademark note

Brew Supply is independent and not affiliated with AeroPress or the World AeroPress Championship. Printed parts used around coffee preparation should be produced, cleaned, and handled with appropriate food-contact caution.

Evidence boundary

BeanSieve controls dose composition for cleaner comparisons; it does not guarantee a sensory improvement.

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

BeanSieve 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

Is BeanSieve only for competition brewers?

No. Competition prep is a strong use case, but any brewer who wants more intentional, comparable dose composition can use it.

Does BeanSieve change the roast?

No. It does not change the roast itself. It changes how the roasted sample is selected and recomposed before grinding.

Documentation And Source Links

Open BeanSieve calculator

Browser-based dose planning workspace for matched tray weights.

Open Open BeanSieve calculator

Bean Sieve how-to guide

Quick guide for tray setup, weighing, and matched-dose building.

Read the Bean Sieve how-to guide