What is the Kiyozuru 202 Bonsai Knuckle Cutter used for?
This tool is designed for removing stubs, knobs, and small branch bases close to the trunk, creating a recessed cut that heals flatter and cleaner. It's ideal for bonsai refinement, reducing visible scarring, and shaping smooth trunk lines.
How is a knuckle cutter different from a concave cutter or secateurs?
Secateurs leave proud cuts that may scar. A concave cutter makes recessed cuts for clean healing. The Kiyozuru 202 knuckle cutter has a more scooped jaw for nibbling stubs and shaping bumps—perfect for precision finishing work on bonsai.
What size branches can the Kiyozuru 202 cut?
It’s made for small stubs and branch bases. Don’t force it on thick hardwood—remove bulk first with a saw or pruners, then refine with the knuckle cutter in small, controlled bites.
How do I avoid bark tearing or cambium damage when cutting?
Support the branch, use sharp blades, and take small angled cuts rather than twisting or gouging. For best healing, stay just outside the branch collar and avoid cutting too deep or flat into the trunk.
Should I use cut paste after using this cutter?
It depends on species and conditions. Many growers apply cut paste to trunk cuts or large wounds, especially during dormant or wet seasons, to support healing and prevent drying out.
Can I use the Kiyozuru 202 on roots or deadwood?
It can clean small root stubs or refine deadwood, but it’s not a substitute for root cutters or carving tools. Avoid gritty areas and use it only for fine shaping, not heavy removal.
Can the Kiyozuru 202 be sharpened?
Yes—use a fine sharpening stone and follow the original bevel. Only sharpen the cutting edges and avoid over-grinding or rounding the blades, which can ruin the alignment and clean cut feel.
How do I know when to sharpen the knuckle cutter?
If it starts crushing, tearing bark, or requires extra force, it’s time to clean and sharpen. A crisp blade makes cleaner cuts and is easier on your hands and the tree.
How do I maintain the Kiyozuru 202 to prevent rust?
After use, wipe sap off, dry fully, and apply a light coat of oil to the blades and pivot. Don’t store it damp. For long-term storage, oil it well and keep it in a dry, low-humidity spot.
What oil should I use on the Kiyozuru 202?
A light tool oil or camellia oil works best. WD-40 is fine for cleaning or water displacement, but doesn’t offer lasting protection—use a dedicated oil for long-term care.
Why does my Kiyozuru 202 feel stiff?
Sap buildup or lack of oil in the pivot is usually the cause. Clean the joint with alcohol or light degreaser, dry thoroughly, and add a drop of oil to keep it moving smoothly.
What’s the size and feel of the Kiyozuru 202?
At 175mm long and around 110g, it's lightweight, balanced, and easy to control—ideal for detailed bonsai work without hand fatigue. It's well-suited for beginners and pros alike.
Is the Kiyozuru 202 safe for fine trunk or branch work?
Yes, when used properly. It’s a precision tool—avoid rushing, keep your fingers clear of the jaws, and make smooth, gradual cuts rather than forcing through material.
Is the Kiyozuru 202 Knuckle Cutter made in Japan?
Yes—this tool is crafted in Japan from high carbon steel, offering superior sharpness, durability, and edge retention compared to cheaper imitations. It’s built for serious bonsai work.
What’s the biggest mistake users make with a knuckle cutter?
Using it like heavy-duty pruners. It’s not for brute force—clean results come from sharp blades, small bites, and patient, precise cutting around trunks and branch bases.
