On fancier models, the arms are screw stems with boxwood nuts.
Handled versions of the plane are also an improvement. Mathieson
would later step up the game on sash fillisters as well as plow
planes, making bridle style fence control with solid ebony
stems, and even a model with solid brass stems with screw locks.
I do not doubt that Mathieson learned this prestigious plane
making skill early on from John Manners.
This plane by Manners has many common features of an early
plane. Manners only made planes for 30 years from, 1792 to 1822
and this plane is an exemplary model of planes made at that
time. In the photos below, notice the rounded shape to the top
back of the plane and the wide but rounded stopped chamfers
along the top edge and front of the plane.
This plane features a rather simple boxwood inserted wear strip
to the inside bottom edge. Later plane makers would dovetail
this boxing in, sometimes even incredibly complex triple and
quadruple dovetails were used. I have several examples of planes
made by David Malloch that feature quadruple dovetailed boxing,
which I will show in a later article.
The sash fillister plane almost always use a depth stop, to set
the depth of the rebate to be cut to a predetermined and
repeatable setting. Manners used a simple beech wooden
stop on this model. Even after 200 years, it fits snuggly in the through mortise in the body of the plane in front
of the mouth.
The stop is tapped from the top to set it to the desired depth
as it projects from the bottom. On other models of Sash
Fillisters, the depth stop may be brass and adjusted by a screw
at the top of the plane.