Marples Smoothing Plane - No. M4

marples smoothing plane m4
Our Rating


Reviewed By: I.Ball

Manufacturer: Marples

Plane Type: Smoothing

Model No: M4


The Marples smoothing plane number M4 is fitted with a Beech rear handle, a Beech front knob, a 'Marples' lever cap, a cap iron and a Marples blade. The blade rests on a flat faced frog.

The cap iron for these Marples bench planes have a piece at the top set at an angle with the wording on the cap iron saying 'Correct Angle For Grinding', as you may have guessed the angle at which the top of the cap iron is set is intended as a guide for when sharpening the blade. The design of these cap irons I believe is unique (there are similar).

The blade can be easily adjusted laterally using the lateral adjuster found behind the blade.

The plane is finished with a red japanning.

Additional Information

marples plane parts

The Bodies, Frogs and Lever Caps are made of high grade Cast Iron and the Lever Caps are Plated.

The Positive Cutter Adjustment, together with the Adjustable Frog make accurate work easy to perform.

The handles are of Selected Hardwood and the Cutting Iron of heat treated Tungsten Vanadium Steel retains its fast cutting edge on the hardest of timbers.

Plane Construction

marples plane parts

Width: 61mm (2 3/8 inch)

Length Of Sole: 240mm (9 1/2 inch)

Mouth Width: 52mm

Cast Thickness: 2.5-3mm

Weight: 1.75kg

Handle and Knob: wooden, usually Beech

Plane finish: red

Marples M4 Plane Blade / Cutter

Width: 51mm

Blade Thickness: 2mm

Slot Length: 109mm

Slot Width: 6.5mm

Top Of Blade Shape: Squared

Blade Markings: W. Marples & Sons, Sheffield England, Solid Crucible Steel

Plane Markings

marples plane parts

"Marples" - found on the top face at the very front.

"M4, Sheffield" - found on the top face at the front, behind the knob.

"England" + Shamrock Symbol - found on the top face at the rear end, between the handle and frog.

"Marples" - found on the lever cap face.

"Marples, Sheffield Eng" (in a circular motion around the Shamrock symobl) - found on the trade label on top of the rear handle.

Manufactured Dates

..1937 - 1965..


(i) This review/article may give warning(s) / advisory notes / cautions / guidelines given in good faith, any such information should not be solely relied upon and seen as the exhaustive list of warnings / advisory notes / cautions / guidelines. Refer to good safety practices for the safety of you and others. Refer to good practices for the good health of your tool and property.
(ii) The details here are given in good faith, the details are constantly growing and evolving including corrections, there is scope for error and shouldn't be fully relied upon, please confirm any details for yourself by performing additional research from reliable sources.

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