Groz 39702 JP/5 No. 5 Jack Plane
- No. 5 jack plane in the title
- 50 mm cutter in the title, 45 millimeters in the specs
- Cast iron base, alloy steel
- Manual hand planer
- 3.5 pounds
- 0.13 inches cutting depth
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A hand-operated plane on a heavy iron sole. The title says jack plane while the type and style fields describe a smoothing plane, so check which plane you are buying.
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ASIN: B09R51P3F6Model: JP/5Category: Chisels
Overview
A woodworking bench gets a hand-powered plane built on cast iron with alloy steel parts. The Groz name and cutter size appear in the title, but other fields describe a different model.
A heavy iron sole gives the plane mass and a flat face, which helps it track along a board. The listing contradicts itself on plane type, cutter width and length, so it is hard to confirm what ships.
Who it's for
Woodworkers who work boards by hand and are comfortable checking the dimensions with the seller can consider it. Buyers who need a confirmed size should look at a listing without conflicting fields.
Pros and cons
- Cast iron base
- Alloy steel build
- Hardwood handle named in the type
- Plane type fields conflict
- Cutter width fields differ
- Included list is just the plane
Performance notes
A hand plane shaves a thin curl with a blade set slightly proud of a flat sole, so sole flatness and blade sharpness decide the finish. Cast iron mass helps the plane stay on line through a pass. The depth of cut is small.
Specifications
| Brand | Groz |
|---|---|
| Model | JP/5 |
| Dimensions & fit | |
| Cutting Width | 45 millimeters (title: 50 mm) |
| Cutting Depth | 0.13 inches |
| Item weight | 3.5 pounds |
| Power & efficiency | |
| Power Source | Manual |
| Construction & materials | |
| Material Type | Alloy Steel, Cast Iron |
| Color | Black |
| Base Material | Cast Iron |
| Included components | |
| Included Components | plane |
| Other details | |
| Style Name | 9 Inch Smoothing Plane (as listed) |
Frequently asked questions
Is the Groz plane a smoothing plane or a jack plane?
The title says jack plane No. 5, while the type and style fields describe a smoothing plane with a 45 mm cutter. Confirm with the seller.
Is the Groz plane a chisel?
No. The category label says chisels, but the product is a hand plane.
Is the Groz plane powered?
No. The power source is manual.