HMO Grass Mats – Flexible TPU Gold Recovery

Nature spent millennia figuring out how to catch gold in moving water.

It’s been working since before anyone was there to watch it.

Our Grass Mats take that blueprint and push it further. Biomimetic tines, engineered to increase turbulence and drop zones. Built to catch what nature catches — and holds it tighter, like greedy little fingers.

Ancient instinct + Modern engineering = More Gold in your hands!

How It Works

Flour gold doesn’t care about your riffles. It rides the current right past them and keeps going. The HMO Grass Mat stops it — because it doesn’t work like a riffle. It works like the creek bed itself.

The biomimetic tine geometry replicates how natural streambed grass creates micro-eddies — the exact zones where fine gold drops out of suspension in nature. We engineered that same effect into every blade, then pushed it further with three progressively optimized designs in every set.

Three Designs. One Order. Zero Guesswork.

• Original — proven baseline, maximum coverage
• V2 Ramps — accelerates material into the drop zones
• V3 Vortex — maximum turbulence, built for flour gold

Each order ships with all 3 versions in your chosen color. One order covers your whole box.

Why It Performs

• Grass-mimicking texture geometry — every tine shaped and spaced to create micro-eddies across the full mat surface
• Biomimetic blade design — flexible TPU tines bend with the current and spring back, constantly disrupting flow and trapping gold
• Engineered for riverbed hydraulics — every dimension dialed in for real sluice and highbanker flow rates
• Superior fine gold retention — flour gold that blows through flat mats gets locked into the grass structure
• Fast, clean recovery — flexible blades release gold cleanly at cleanup. Rinse, recover, run again.

Samuel Morgan + Hobby Miner Outlet collaboration — Designed in partnership specifically for maximum field performance. Not a catalog product — a purpose-built tool.

Made to Fit — Any Rig

Sized and optimized to fit all HMO sluices and highbankers right out of the box. Running a different brand? We’ll manufacture a mat to fit your gear too. Contact us before ordering with your dimensions and we’ll take care of the rest. Custom sizing is a premium service and priced accordingly.

Built Different. By Design.

Most gear in this industry is sourced from a catalog, rebranded, and shipped. Not ours. We design it, manufacture it, inspect it, and ship it directly to you — no middlemen, no third-party parts, no compromises. When you find something in the field that needs fixing, it feeds straight back into the next build. That’s why we ask for your feedback — you’re not just a customer, you’re part of our design team. That’s what maker-direct means. That’s what you’re buying.

✅ USA-made ✅ Hand-inspected ✅ Ships in 3–5 business days ✅ Free shipping over $50

30-day satisfaction guarantee. Contact us and we’ll make it right.

Always be a responsible prospector. Backfill your holes, pack out your trash, and leave every site better than you found it. Access to these places is a privilege worth protecting.

— the Prospector

European Inspired — USA Crafted — Built for the Hunt!