# DropStop

Canonical: https://brew.supply/tools/dropstop
Description: DropStop is a planned AeroPress attachment intended to reduce liquid dripping into the cup after the brewer reaches its chosen press endpoint.

DropStop is a planned attachment intended to separate the chosen end of the press from the unwanted drips that can continue afterward.

## Problem It Solves
A brewer can stop at a measured or physical endpoint and still allow additional liquid to fall into the cup while moving the AeroPress away. That makes the final cup slightly different from the press output the recipe intended and can add cleanup during a rushed workflow.

## Variable It Controls
The intended control is post-press liquid transfer: what enters the cup after active pressing has ended. It is not a press endpoint tool, a valve with published performance, or a replacement for measuring the final beverage.

## How It Works
- Reach the recipe's chosen press endpoint using normal technique, AeroStop, or a measured AeroBox workflow.
- Use the future attachment to interrupt or contain residual dripping before the brewer is moved away from the cup.
- Keep the post-press handling sequence consistent so any comparison separates the attachment from changes in press technique.
- Confirm final beverage mass independently rather than assuming every retained drop is identical across coffees and recipes.

## When To Use It
- When post-press drips make a measured output difficult to preserve.
- When moving the brewer creates stray liquid on a competition or practice station.
- When a brewer is already controlling the endpoint and wants the handling after that point to match.

## What It Does Not Solve
- It does not choose or enforce the press endpoint.
- It does not measure press output, flow rate, extraction, or final beverage mass.
- It does not establish that all post-press liquid is undesirable.
- It is unnecessary when the current workflow already moves the brewer cleanly without meaningful dripping.

## Print Guidance
- Attachment geometry, sealing behavior, cleaning, and food-contact requirements remain under development.
- A future design must not create unsafe pressure or obstruct normal disassembly.
- No file should be inferred from the concept description; there is no public release yet.

## Version Status
- Planned

## Competition Relevance
The concept is most relevant to output-controlled recipes where the brewer wants the cup to stop changing once the chosen press endpoint is reached.

## Safety Disclaimer
Brew Supply is independent and not affiliated with AeroPress or the World AeroPress Championship. Planned printed parts must be validated for fit, heat, food-contact, and safe use before they are treated as finished brewing hardware.

## Source Links

## Related Guides
- [AeroPress precision tools guide](/aeropress-precision-tools): How Brew Supply separates measurable controls, workflow aids, and brewing decisions.
- [AeroPress competition gear checklist](/aeropress-competition-gear): A practical framework for choosing gear that earns its place in a competition setup.
- [Why AeroPress brews stop matching](/learn/aeropress-repeatability): A guide to hidden variation and the difference between controlling a variable and improving a cup.

## Related Tools
- [AeroBox](/tools/aerobox): Measure press output and flow before post-press handling begins.
- [AeroStop](/tools/press-stop): Define a physical press endpoint; DropStop addresses what happens afterward.
- [AeroHome](/tools/aerohome): Catch residual drips after the brewer leaves the cup.

## FAQ
### Is DropStop the same as AeroStop?
No. AeroStop defines where the plunger stops. DropStop is intended to address dripping after active pressing has already ended.

### Will DropStop change pressure inside the AeroPress?
That has not been established. Pressure and safe-release behavior must be tested before any final design is published.

### Is a download available?
No. DropStop is planned and currently has no public product-specific file or release date.