What this tool adds
What this tool adds to your bench
This selected mini plane is the narrow wooden grooving format. The body and blade work along the groove, rather than using a broad base that bridges over a recess. That distinction is useful when comparing it with the WoodRiver router plane: the shared word router does not mean that the two tools register on the wood in the same way.
The selected variant is the 18 mm model 40856. Its listing specifies a Japanese high-carbon-steel blade and white-oak body, with a 7 ×0.7 ×2.3-inch size and approximately 150g listed weight. The blade is set for a pulling action. The useful buying question is whether that width and slender body suit the groove you need to form or refine, including room to keep the tool registered through the intended stroke.
Groove width is a different requirement from working depth. The 18 mm cutting-width claim is not an 18 mm maximum-depth capacity. If your setup needs a fence, positive depth stop or outer handles, compare a tool whose supplied arrangement explicitly includes those controls; they are not established as part of this mini plane’s contents.
The offer describes one complete mini grooving plane and English instructions. Use those instructions for blade setup before the first cut. For a recess floor referenced to the surrounding surface, compare the WoodRiver router plane. For trimming an inside corner with a skewed edge, compare Kakuri’s separate 24 mmLeft rabbet model; its different working contact matters more than the difference in blade width alone.
Choose for your actual work
- Compare the actual groove opening and the plane’s support with the workpiece. Do not choose by the word router without checking the body and cutter arrangement.
- Use the selected 18 mm model’s instructions and dimensions. A maker page for a larger related tool is not a fit or setup specification for this mini plane.
Fit checks & limits
- Confirm the required groove depth and any need for a fence or screw depth stop; those capacities and accessories are not specified for this model.
- For a spare blade, obtain explicit model 40856 fit. A similar width or another maker’s plane does not establish compatibility.
Use & care
Follow the described English instruction sheet for blade adjustment and preparation. Initial setup should be checked before finish work; settings or photographs from a different router-plane construction do not establish the correct setup.
Questions before you choose
Does it have the broad bridging base of the WoodRiver router plane?
It is the narrow wooden grooving format. The WoodRiver model has a separate broad base, two handles and a cutter working below that supporting surface.
Is 18 mm the maximum depth?
It is the supported cutting width for this variant. A maximum working depth is not established by the reviewed exact-model source.
Are a fence and depth-stop screw included?
Those features are not established as supplied for model40856. Choose a plane with explicitly documented guides if they are necessary to the job.