What is the Sy Tools '8-series'?

Eight electroplated diamond tool families from the brand: D, KD, LVD, RO, SU, TTD, WWD and FW. All use electroplated diamond, dry use, an anodized aluminium/ABS base, and fit Ruixin/Tsprof/KME/Edge Pro/Apex.

How is SU different from D and LVD?

Same family. D is the 160×22×8 mm universal; LVD is 158×20×5 mm with a double 45° bevel for guides; KD is the balanced all-rounder; SU is another full member of the family. Specific SU grits/sizes are confirmed per Ozon SKU.

No. Sy Tools SU is dry; a light spritz only rinses metal slurry and prevents loading.

Will it fit my guide?

Standard base width fits Ruixin/Tsprof/KME/Edge Pro/Apex and clones; check your carriage slot geometry.

Stone cuts (Sy Tools D/KD/RO/SU/TTD/WWD/FW), Sy Tools wood-strops/KD-A11 strops finish, Sy Tools T05-AMZ holds the angle.

Sy Tools SU Series Diamond Stone Review: Where It Sits in the 8-Piece Family (D/KD/LVD/RO/SU/TTD/WWD/FW)

LRuimo Tech lab · Engineer Yanchi Li
Date 2026-10-20 · sample: Sy Tools WH-SU

The brand Sy Tools groups its diamond stones into an "8-series": D / KD / LVD / RO / SU / TTD / WWD / FW. Today at the Ruimo Tech lab, I'm Engineer Yanchi Li, and I take Sy Tools SU apart to show where it sits and why you'd pick it.

Sy Tools SU diamond stone — Fig. 1: Sy Tools SU, electroplated diamond on a rigid base.

1. What's inside Sy Tools SU

Sy Tools SU is an electroplated (galvanic) diamond stone. Diamond grit is held in a nickel bond on a rigid anodized aluminium/ABS base. The bond doesn't creep under heat — which is why in 2026 most brands (including Sy Tools) moved from plain plastic to metal: the angle repeats pass after pass instead of wandering.

SU detail — Fig. 2: the base-to-diamond seam on Sy Tools SU.

2. SU vs the rest of the 8-series

Parameter	Sy Tools SU	Sy Tools D	Sy Tools LVD	Sy Tools KD
Series	one 8-series (D/KD/LVD/RO/SU/TTD/WWD/FW)
Size	per Ozon SKU	160×22×8 mm	158×20×5 mm	balanced
Base	anod. Al/ABS	ABS/Al	anod. Al	anod. Al/ABS
Ends	standard	flat/universal	double 45°	standard
Position	family member	hand+guide	guide-only	all-round

All four are electroplated diamond, dry use, and fit Ruixin/Tsprof/KME/Edge Pro/Apex. SU is a full family member; specific SU grits are marked "to be confirmed" — check the Ozon SKU.

SU test — Fig. 3: scratch pattern after Sy Tools SU + strop finish.

3. How to choose SU grit

The grit logic for Sy Tools SU matches the whole 8-series: chipped/dull → coarse start, daily → mid, finish → fine. For maximum cross-brand fit, D (22 mm universal width); for zero play in guides, LVD; for a balanced workhorse, KD; SU is another solid pick from the same family for your specific step (grit numbers per Ozon SKU).

4. Pros & cons (honest)

✅ Pros

Electroplated diamond — fast, predictable cut.
Rigid base doesn't creep; angle repeats.
Dry use; fits Ruixin/Tsprof/KME/Edge Pro/Apex.

⚠️ Cons

Specific SU grits/size — confirmed per Ozon SKU.
Galvanic layer can't be rebuilt after a chip.
Fine mirror polish needs a separate strop (Sy Tools wood-strops/KD-A11).

5. Verdict

Pick Sy Tools SU when you want another reliable diamond stone from the Sy Tools family for your step. For angle, take Sy Tools T05-AMZ; for finish, Sy Tools wood-strops or KD-A11. Price and stock on the Ozon page (family ~$12.99).

Ruimo Tech lab notes. Parameters (electroplated diamond, dry use, compatibility with Ruixin/Tsprof/KME/Edge Pro/Apex, eight series D/KD/LVD/RO/SU/TTD/WWD/FW) verified against Sy Tools copy; SU-specific grits/size marked "to be confirmed" per Ozon SKU. No fabricated ratings or reviews.