Rex and All--
After reading this query a couple of times, I'm a little confused (not
all that different from my permanent condition, I'll admit). The rough
stock is 5/4, and must be taken to 4/4 or a little less (15/16). That
sounds like the amount to be removed is more like 5/16 than 3/16. In
contemplating this much dimensioning of lumber with hand tools, the
difference is significant, if only in the amount of grunt labor
involved.
But back to basics: Several procedures will probably work, but the
time-honored process, with no jigs other than bench dogs and end
vise/dog or similar device to secure the piece, is incorporated in the
FEWTEL acronym: Face, Edge, Width, Thickness, End, Length. Details
are as follows:
1) Make one Face of the board flat and smooth. This becomes the 1st
reference surface. I would do this mostly with a jack plane, or jumbo
jack (Stanley #5 1/2), or a #6 foreplane. The surface is not "final,"
just removing the sawmill roughness and getting it even and reasonably
flat. No scrubbing yet. This is where you try to take out any wind
(long I sound, not blowing air) or twist, or convexity along the
length, or other deviations from "reasonably flat." Winding sticks can
be useful here.
2) Make one Edge square to the smoothed face, and straight
("jointed"). This is the 2nd reference surface.
3) Rip to Width, and square and joint the second edge, using the 1st
face for square reference and the 1st edge for width reference. At
this point, you use a marking gauge to scribe lines along both edges,
from the 1st reference surface, just short* of the thickness you want
to achieve. (Just short, because you'll be planing down *to* that
line. If you plane past the mark you've made, you have no way of
telling where you are, in reference to the thickness you want, short of
repeated use of caliper gauge, mullet, or similar.)
4) Plane to desired Thickness. This is when the fun, or work as some
used to call it, begins. Now is the time to put your scrub plane (#40
or a wide-mouth jack with heavily cambered grind on the iron) to use.
Use diagonal strokes, full across and working evenly along the whole
surface, alternating the diagonal directions of each pass. You want to
keep an eye on where the edge of each pass comes out at the edge, in
relation to your scribed mark, and don't try to get to close to it with
the scrub. When hogging off wood like this, it is easy to go too far.
When your scrubbing approaches the line, switch to the same jack or
foreplane you used to smooth the 1st reference face, and continue
working the surface, now removing the ridges left by scrubbing, until
you are just down to (but not past) the scribed thickness mark. In the
final stages, check the mark frequently. It is easy at this stage,
making nice long passes with a sharp plane, for one or more corners to
be reduced beyond the line, where you don't want to go.
5) When the thicknessing is complete cut one End square.
6) Finally, cut to Length. Your dimensioned board is complete.
A couple of othr hints: If you will need to glue up panels or make
one wide board from two or more narrow ones in the course of your
project, I would suggest leaving the stock slightly thicker than the
final dimension, and work it on down to desired thickess (with a finer
set, approaching final smoothing) *after* the panels are glued up.
With dimensioning by hand, there *will* be some small irregularities in
thickness that are best worked out after edge jointing and glue up,
that you need to allow for.
Others can chime in regarding use of a 'mullet' to check thickness and
other ancient practices, but this should give you a place to start.
Good luck,
Tom Holloway
On Thursday, August 28, 2003, at 07:04 AM, John "Rex" Wilson wrote:
> I am currently working on a 7 shelf and double raised panel cupboard
> in the shaker style. It will be used by a local artist to store her
> work in progress. The hard maple stock I am using is 5/4 with rough
> faces and edges. The wood looks nice but it is center cut and may cup
> if I mill it thin (7/16 or less). I intend on working the material
> down by hand because I need to reduce the carcass sides to 1 inch or
> 15/16 thick. I have a full stash of old and new bench planes from #1
> to #8 and scrapers to match the widths of most of my bench planes. I
> own a scrub plane (#40) and some large owner made woodies (I'll show
> you sometime when I get the courage). My question is basic --- If I
> was in a hurry I would reduce the stock with my loud dusty portable
> power planer --- How do I do it with hand tools? My benches are both
> western (with end vise and dogs) and European (two front vices, no
> holes, no dogs, good support jack for edge work. The maple is without
> twist, cup or wind, but it looks like I will be removing at least 3/16
> material from over 75 board feet of stock! I am looking for
> suggestions for jigs, methods, etc. Any good suggestions will be
> attempted and appreciated. So far I have squared and smoothed the
> edges of 4 - 50 inch boards and the satisfaction was worth the effort.
> For the faces of the boards I will need a good systematic old tools
> solution. How did the venerable old wood grubbers do it?
>
> Rex Wilson
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