The Subminimal Flux is an electric Weiss Distribution Technique tool designed for home baristas and prosumers who want consistent, clump-free espresso puck preparation without manual stirring. The Flux runs at a user-selectable fast speed of 600 or 800 RPM, then automatically drops to a 350 RPM slow spin for four seconds to level the bed before extraction. It is available in Black, White, and Terracotta.
Manual WDT tools require the user to apply even pressure and consistent speed, variables that shift from shot to shot. The Flux removes that inconsistency by motorizing the process. Holding the touch button drives the needles at the chosen fast speed (600 or 800 RPM) through the full depth of the basket, breaking up clumps that cause channeling. Releasing the button triggers an automatic four-second slow spin at 350 RPM that settles the grounds into a level bed without disturbing the surface. The result is a puck that is ready for tamping with the same geometry every time, which is the foundation of a repeatable shot.
The Flux ships with needles set parallel for tight, precise circles, but the spread can be widened before installation to cover more of the basket in fewer passes. Needles attach magnetically, so swapping between configurations or replacing a worn set takes seconds. Two complete needle sets ship in the box: one installed and one spare, so the tool is ready to use from day one without an additional purchase.
The Flux charges via USB-C and is built around a long-lasting, replaceable battery paired with a custom high-torque, micro-geared motor. When not in use, the tool sits vertically on the included wall magnet or horizontally on the included tray, keeping the counter organized. The compact body measures 90 mm x 21 mm without needles and approximately 140 mm x 21 mm with needles installed.
| Specification | Value |
|---|---|
| Fast speeds | 600 RPM / 800 RPM (user-selectable) |
| Slow speed | 350 RPM (automatic, 4-second finish) |
| Charging | USB-C rechargeable; battery is replaceable |
| Body dimensions | 90 mm x 21 mm |
| Dimensions with needles | ~140 mm x 21 mm |
| Tray dimensions | 160 mm x 64 mm x 15 mm |
| Wall magnet dimensions | 42 mm x 14 mm x 16 mm |
| Weight (each variant) | 160 g |
| Colors available | Black, White, Terracotta |
| Included accessories | Replacement needle set, tray, wall magnet, certificate of authenticity, instructions |
The Flux suits home baristas and prosumers who pull espresso regularly and want a repeatable, motorized alternative to manual WDT stirring. It works with standard portafilter baskets and is a practical upgrade for anyone already using a manual WDT tool who wants to remove hand-speed variability from their puck prep routine.
The Flux is not waterproof and cannot be rinsed under running water; cleaning is limited to wiping with a slightly damp cloth. It is not designed for batch or commercial-volume workflows where a fully automated dosing and distribution system would be more appropriate.
With the Flux stopped, tap the top touch button five times and hold. After a few seconds the fast speed will shift between 600 and 800 RPM. Release the button to save the new setting; the Flux retains that speed until you change it again.
Yes. The Subminimal Flux ships with two complete needle sets: one set is installed before first use and a second set is included as a spare. Needles are held by a magnetic cap, so swapping them requires no tools.
Yes. The Flux needles ship in a parallel configuration for tight, precise circles, but they can be spread apart before installation to cover a wider area of the basket in fewer passes. The adjustment is made before placing the needles into the tool.
No. The Flux is not waterproof and should not be rinsed under running water. To clean the Flux, wipe the body and needles gently with a slightly damp cloth as needed.
The Subminimal Flux includes both a tray (160 mm x 64 mm x 15 mm) for horizontal storage and a wall magnet (42 mm x 14 mm x 16 mm) for vertical mounting. Both accessories ship in the box at no additional cost.
At CoffeeRoast Co., we are passionate about coffee. Every piece from our catalog is designed and rigorously tested to make sure you get perfect and consistent roasts every time.
We’ve partnered with various manufacturers that operate around the globe under a strict set of guidelines both on a local and corporate level so that when you shop with us, you will be able to select from the highest quality coffee roasters and coffee equipment available on the market.
Whether you are a coffee enthusiast or a small business owner, you're sure to find whatever so you have the perfect roast you've been looking for.
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Returns and Cancellation Policy:
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In most cases, once the order is processed, it is final and not cancellable due to the larger nature of these products. Requests for returns/exchanges after the item has been delivered will be evaluated on a case by case basis. Any return request is subject to an administrative and cancellation fee equal to 10% of your order with a minimum of $35.
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Refunds:
Should an item be returned because it was defective, misrepresented, not as described, etc., CoffeeRoast Co. will issue a full refund and will reimburse the customer for all shipping expenses associated with the return.
Please allow 5-10 business days from the time the returned item is received to process a refund. Refunds will only be issued to the original form of payment that you used when placing your order.
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