Push Sticks and Push Blocks - Always Keep One Handy
If you're fond of all your fingers, a good way to help keep them is
by using a push stick or push block. This is especially pertinent when
milling small pieces on the table saw and jointer but also applies to
the router table, shaper, and band saw. A push stick keeps your precious
body parts away from the blade and allows for a smoother, more
controlled cut. If you ever feel the least bit nervous about making a
cut "freehand", that's a pretty good indicator that you should be using
a push stick. Sacrifice the stick, not your finger!
It's
easy to make push sticks and push blocks and I encourage any beginning
woodworker to make at least one push stick for a starter project. I've
created a number of push devices over the years, ranging from the basic
straight stick with a notched end to a fence straddler with an
adjustable support end. Most of these were made from scrap pieces of
poplar and pine but I've also used oak, maple, and Baltic birch plywood.
With all of them, the edges are sanded smooth and the handles are
rounded so they don't dig into my hand during use.
My
favorite push stick is an improved version of the classic straight piece
of wood with a notch on the end. It features a curved handle,
making for a slightly more comfortable grip, and an elongated snout (?)
that helps to hold the wood tight against the table surface. I made the
push stick from 3/4" Baltic birch plywood (12 layers) so I don't have to
worry about it splitting or cracking. I store the stick on a shelf under
the table saw in close proximity to the power switch. This makes it
easier to get into the habit of using the stick when I reach down to
turn on the saw.
For
ripping thin pieces of stock, I use an adjustable push stick apparatus
that straddles the table saw fence. This works well in situations where
there is insufficient space between the blade guard and the fence for a
conventional push stick. And I like the fact that the handle of the push
stick is above the fence, rather than inline with the blade, thereby
providing an extra measure of safety. The business end of the stick
slides up or down in a notch to accommodate material of varying
thicknesses. It pivots on the front bolt and locks in place with a wing
nut attached to the rear-most bolt. If I were to build another
straddle-style push stick, the only change I would make to this design
would be to use plywood for the main body rather than solid wood. With
the current design, the push stick sometimes binds during the winter
months because the maple body shrinks a tad, as wood is wont to do when
the humidity drops.
A
close cousin of the push stick is the push block. It allows you to apply
greater downward pressure along more of the piece which is helpful when
ripping smaller boards because they have a greater tendency to get
kicked up by the front of saw blade if not adequately secured. A
push block also works well when you need to cut a uniformly deep groove
in a board by keeping the board flat against the table saw surface. A
simple but effective push block can be made from a piece of wood with
one corner cut off at a 45 degree angle and a support cleat glued to the
rear corner. I keep a couple "cutoff" push blocks of different sizes
close by the table saw.
A
hold-down feather board provides an additional measure of safety for
certain cutting situations. I use one that fits into the miter gauge
slot and tightens in place via a large knob. It keeps the board firmly
against the fence and can also help to hold the board flat against the
table surface by using the hold-down tab (or whatever it's called).
Sometimes I'll clamp one or two feather boards to the fence vertically
when it is important to keep the piece flat against the table -- such as
when cutting a groove that needs to be a uniform depth. A push stick can
then be used to push the piece forward without having to worry so much
about holding it down.
Push blocks for the Jointer

I keep an assortment of push blocks hanging right above my jointer.
That way, they're close at hand and I never have an excuse not to use
one in situations where a push block is clearly called for. That
includes surfacing operations and jointing smaller pieces of wood. In
addition to providing a smoother cut, it's a comforting feeling to have
an extra hunk of wood (i.e., the push block) between your hands and the
cutter head. If there's a mishap, it's the responsibility of the push
block to take one for the team.

The push block I use most often is a fairly classic design - a double
humped handle sitting atop a flat base with a protruding cleat on the
underside. It measures about 14 inches long by 4 inches wide. (I think I
may have found the plans for it years ago in one of Tage Frid's books).
With one of these babies supporting the back of the board being joined
and one bearing down on the leading end, the board is held very securely
and your fingers are kept out of harm's way. That's the essence of a
push block.
For
longer boards, we have the two-handed push block. I made mine from a 2
foot length of a 2 x 4 with notches cut out for the handles. It works
really well because it allows you to really bear down, maintaining solid
contact between the wood and jointer surface throughout the entire pass.
This makes for a really smooth cut by preventing the mid-board "snipe"
that can sometimes occur when you're using two separate push blocks and
have to reposition them in the middle of the operation.

I own a couple of those plastic push blocks with rubber pads on the
underside. A number of woodworking tool suppliers sell them. I'll
sometimes use them on the jointer by using one in my left hand to hold
down the stock and a conventional wooden push block in my right hand to
push the board forward. I also use plastic push blocks on the router
table to hold and guide a piece of wood past the router bit. They afford
a fair amount of control while keeping your fingers safely away from the
hungry router bit. Highly recommended.
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