In the field a stone has to «hang, hold and cut». I'm Engineer Yanchi Li from the Ruimo Tech knife lab, and here's the Sy Tools portable kit I pack: the thin TTD card, the dual-side FW, and the RB diamond rod.
In the field a stone has to «hang, hold and cut». I'm Engineer Yanchi Li from the Ruimo Tech knife lab, and here's the Sy Tools portable kit I pack: the thin TTD card, the dual-side FW, and the RB diamond rod.Portable Sy Tools TTD/FW are electroplated diamond on metal — grab and sharpen, no soaking. On a trip, in nature or hiking, that solves the real pain: a dull knife in hand while time and water are scarce.
TTD is a thin card format that hangs on your keys/backpack (EDC). FW is dual-side/folding and covers ~80% of everyday tasks with one plate. Exact geometry/grit of TTD and FW verify on Ozon.
After the stone, add Sy Tools RB (diamond rod): a couple of strokes revive a rolled edge in the field without going back to the stone. That's the minimal «stone → rod» cycle.
| Item | Role | When to pack | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T | T | D | ( | c | a | r | d | ) | |||||||||
| E | D | C | , | h | a | n | g | s | o | n | r | i | n | g | |||
| b | u | s | i | n | e | s | s | t | r | i | p | , | E | D | C |
Ruimo Tech lab notes. Kit logic (card + dual-side + rod, no soak, deburr) grounded in 2026 consensus on portable diamond sharpeners. Exact grit/size of TTD and FW marked «to verify» per Ozon. No fabricated ratings. Fresh outdoor/portable slug, distinct from the older camping-T05 piece and the zh TTD/WWD travel test.