MHW DH 18g Filter Basket: 58mm Black

MHW-3BOMBER DH 18g Filter Basket: 58mm Black

MHW DH 18g Filter Basket: 58mm Black is engineered to extract the best from medium-dark and dark-roasted beans. With a three-aperture crisscross layout, this 58mm basket offers precise flow control, even saturation, and improved flavour clarity in every shot.

Designed for Dark Roast Espresso Precision

The MHW-3BOMBER DH Filter Basket stands out with its innovative three-aperture layout—each with different hole diameters (0.2mm, 0.25mm, 0.3mm)—arranged in a structured crisscross pattern across a straight, flat base. Tailored for darker roasts, the design balances pressure throughout the puck to reduce channeling and boost sweetness, leading to a smoother, more layered espresso profile.

How It Works

• Three-layer hole pattern: 580 total holes distributed in concentric rings by size to guide flow rate and balance extraction pressure.
• Flat, groove-free base: Allows for full puck contact with tamper and ensures even saturation.
• Outer zone (0.2mm): Increases puck pressure and slows flow for a cleaner finish.
• Inner cross zones (0.25mm & 0.3mm): Speed up flow where resistance is typically higher, improving sweetness and reducing bitterness.

Specifications

• Inner Diameter: Approximately 58.5mm
• Outer Diameter (Top): Approximately 70mm
• Height: Approximately 24mm
• Capacity (Specification): 18g (actual capacity depends on grind size and roast level)
• Total Number of Holes: Approximately 580
• Hole Sizes: 136 × 0.3mm, 164 × 0.25mm, 280 × 0.2mm
• Hole Layout: Crisscross pattern with layered concentric rings
• Material: AISI304 stainless steel
• Colour: Black (other variants: Gold, Iridescent, Silver)
• Compatibility: Most 58mm coffee machine portafilters
• Recommended Dose: ~18g (medium-dark to dark roast coffee)

Key Features of the DHFilter Basket

• ✅ Crisscross extraction design: Engineered for consistency with three aperture sizes distributed in layered symmetry.
• ✅ Optimised for dark roasts: Specifically tuned for medium-dark to dark roast profiles.
• ✅ Enhanced sweetness and mouthfeel: Balances inner/outer puck pressure for smoother, richer extractions.
• ✅ Flat-bottom build: Compatible with a wide range of tampers and dosing tools.
• ✅ Wide extraction surface: Improves water dispersion across the entire coffee bed.
• ✅ Durable AISI304 stainless steel: Seamless and corrosion-resistant for commercial durability.
• ✅ Available in four finishes: Black, Gold, Iridescent, and Silver.

Maintenance & Cleaning

• Rinse thoroughly after each use.
• Deep clean weekly with espresso machine-safe detergent.
• Avoid abrasive brushes to protect the hole structure.

Best Practices for Brewing

• This basket is calibrated for medium-dark and dark roasts—avoid light roasts as the flow dynamics differ.
• Ensure the puck prep is even to avoid channeling. Use tools like the SE Pro WDT Tool for consistent distribution.
• Pair with a high-quality grinder to maximise extraction potential.

Comparison & Performance Insights

In controlled tests using dark roast beans, the DH Filter Basket delivered:

• Lower acidity and reduced bitterness compared to standard baskets
• Medium-high sweetness and enhanced texture
• Consistent extraction yields (~19.02% vs 19.64%) and TDS (~9.78% vs 10.1%) with same dose (18g) and yield (35g)

Ideal for users seeking more nuanced flavours in medium-dark to dark roast coffee without over-extracting bitterness.

Questions and Answers

Review and Coffee Parts Thoughts

The DH 18g Filter Basket from MHW-3BOMBER shows thoughtful engineering and a clear purpose—unlocking the best from dark roasts. The unique triple-aperture pattern significantly enhances flow dynamics, and the flat-bottom design works seamlessly with most tampers and tools in our tamper collection. If you’ve struggled to bring out sweetness in darker beans, this might be the basket that changes your game.

Explore more precision filter baskets or browse our full collection of coffee accessories for your barista setup.