Espresso
Build Your Bar
Machines and essentials for a serious home espresso setup.

A WDT (Weiss Distribution Technique) tool uses fine needles to break up clumps in freshly-ground coffee before tamping. Ground coffee naturally clumps, creating uneven density in the puck that leads to channeling. Stirring with a WDT tool distributes grounds evenly so tamping produces a level, uniform surface — cleaner extraction, more consistent espresso.
After dosing grounds into the portafilter, hold the WDT tool just above the surface and rotate it slowly — the needles break up clumps as they pass through. Make 3–5 full rotations, moving the tool up and down slightly. You'll see the grounds settle flat. Then tamp normally. The Yu Series' cyclone needle pattern is designed for efficient coverage with minimal effort.
A bottomless (naked) portafilter has no spouts — espresso flows directly from the basket, visible from below. Channeling and uneven extraction show up immediately as spurts or splits in the flow. Use it to diagnose and fix distribution and tamping issues, or as a permanent setup once your technique is dialled in.
The Yu Series tools are designed for standard 58mm espresso setups. The Unibody Bottomless Portafilter and Cyclone Needle Distributor are compatible with 58mm machines including the HiBREW H10A and H10 Plus. Always verify your portafilter size before ordering — accessory sales are final and non-refundable.
MHW-3BOMBER Yu Series tools purchased through Fix Coffee are covered against manufacturing defects. View warranty terms and the claim process here.