Lee Valley Tools - Getting Started on a Chip Carving Project

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Getting Started on a Chip Carving Project

Chip carving is an ideal technique for the person

who wants to learn a bit about woodworking, but

has always been discouraged at the prospect of

buying a garage full of expensive and intimidating

power tools. Fortunately, only a few tools are

required to get started on a chip carving project.

You need only chip carving knives, sharpening

equipment, and a few small pieces of wood.

In this article, we give you step-by-step instructions

for applying the pattern to the wood, making first

cuts, choosing knives, and finishing. All instructions

assume the reader is right-handed; keep this in mind as you begin. (Read over the

"General Cutting Rules" below, before you start.)

Applying a Pattern

The first choice for wood is basswood. It is astraight-grained, unfigured wood that carves

beautifully. Later, if you wish, try butternut or

walnut.

If you are going to follow a pattern from a book, first

prepare a piece of wood that approximates the size

of the pattern given. The wood should be between

1/4" and 3/8" thick. Scrape and sand the surface as

if you were finishing it, because you won't be able to

do this after carving without dulling the crisp points and carved details.

After you have prepared the piece of wood, make a photocopy of the design you like,and cut it out so it fits nicely on your wood. The photocopied pattern can be transferred

directly by pressing it face down onto the wood with a hot iron. (Set the iron to about a

medium heat.) This works well, because photocopier ink is actually a heat-sensitive

powder, and reheating it with an iron will melt it, dropping the pattern onto the wood.

After pressing with the iron, carefully lift up one corner to see if the pattern has

transferred clearly. If not, iron some more. Do this at all four corners until you are

certain the entire pattern has transferred clearly. Remember, be sure you have a good

transfer before removing the paper, as you can never replace the paper accurately

enough to re-iron.

Another word of caution: if you iron on a piece of wood that has glue joints, the heat

will sometimes expand them. This happened to me, but I was able to save the piece

by re-clamping immediately and allowing the wood to cool.

Making The First Cuts

Many books on the subject of chip carving recommend that you hold the knife in a

manner that to me seems awkward and uncontrolled. If you are able to carve that way,

go ahead. I feel more comfortable holding the knife like a pen, except perhaps a bit

more upright. This feels natural and helps you achieve a consistent angle of cut.

While cutting at the same angle into the wood, it helps to vary the blade angle forward

or backward, depending on the type of cut you are making. Obviously, you can't turn


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corners if the blade is at a shallow angle, so stand

it up. On the other hand, with small chips, you can

actually cut against the grain by almost laying the

knife down and cutting. By holding the knife this

way, the heel of your hand is on the work, as is

your other hand. The first or second finger of your

left hand guides the blade.

If the movement

of the blade isaway from you,

your right hand

holds the knife,

while a finger of

your left hand

actually pushes

on the back of

the blade. When cutting the other way, your right hand pulls the blade toward you,

while the finger on the other hand acts as a restraint. Be careful to place your finger

just above the sharpened portion of the blade when cutting toward you. For finer

control, use your finger as a fulcrum. For example, when you near the end of a cut,

stop pushing with your finger, and pivot the knife forward, being aware of the point'slocation, so you don't undercut.

I carve sitting in a swivel-type armchair, and place the work on a piece of plywood that

extends off my radial arm saw table. The work is about chest high, so no bending is

required to see details.

Finishing

All traces of the photocopied pattern must be removed, or they will appear as dirt

spots under the finish. Avoid gloss and semi-gloss finishes; they give the pattern a

plastic-coated look. I recommend a low-gloss urethane. Sand lightly between coats

with wet and dry paper, being careful to not round-over crisp points. If you wish to turn

your project into a coaster, simply glue cork onto the bottom, let it dry, and trim to

size.

Removing just one chip is satisfying, but admiring a finished project, which is very

beautiful, is much more gratifying. It is hard to believe that removing simple triangles

from a wooden surface can create such lasting beauty.

Choosing a Knife

It is important that a chip-carving knife have a thin, wedge-shaped blade capable of

holding a razor-sharp edge. One knife is all you need to get started; however, two

others would be quite useful.

The most practical knife for a beginner has a blade with a cutting edge that is

approximately parallel to the handle (Photo 1). If you want to purchase only one knife

to start with, this is the one.

The second choice is a knife that has a cutting edge about right angles to the handle

(Photo 2). It is used for stabbing.

The third knife I would recommend to a beginner has a blade with a fine point (Photo

3), which is useful for carving delicate scroll work, such as the corner areas of the

pinwheel pattern. If possible, buy a knife that has a handle with a

round, rather than an oval cross-section; it can be turned more easily in the fingers to


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follow sharply curved lines.

General Cutting Rules for Chip Carving

1. Cut with the grain, as the long fibers of

the wood will tear at the cut line when

cutting against the grain.

2. Don't cut too deeply. About 1/8" is the

deepest you should go on the biggest

chips on these pieces. For smallerchips, cut less deeply.

3. Remove large chips in stages,

particularly if you have already carved

out a section nearby. Otherwise, the

force you have to apply to remove the

whole chip in one cut will deflect wood.

This deflection will occur toward the

weakest spot, which will no doubt be the

nice crisp edge you just cut.

4. Cut away from a previously carved chip,

rather than cutting toward it; the wedging

action of the blade could pop out a partof the mountain that was to be left in.

5. If the chip does not have carving adjacent to it, remove the complete line of the

pattern. If it does, it is best to stay back from the line when removing the first

chip, then cut its adjacent chip, also staying back of the line. Finally, make

your finishing cuts on both sides to split the line. At this point, watch that

straight lines over multiple chips are maintained.

6. Don't undercut. Try to visualize where the point of your blade is, and avoid

leaving a score mark at the base of a cut. This is another good reason to take

out progressively larger chips, rather than trying to remove the entire chip at

once. Do not pry chips out. Instead wriggle them to see where they are still

attached, then go a little deeper in that area and wriggle again. Some

undercutting will occur, but if you have done everything right up to this point, itshould be a nearly microscopic line.

7. To remove undercuts, turn your knife over, and with the dull side of the blade at

the same angle as your cut, gently draw it the length of your cut, then rotate

the work 180, and do it going the other way. The operative word here is gently.

You are not trying to create pressed wood decorations. The undercut must be a

very fine one. This is not a method of erasing an unintended slip.

8. Before making marks with the stabbing knife, remove the line of the pattern with

the primary knife, then press the stabbing knife into that cut line. Pressing into

a line of the pattern will leave black ink in the bottom of the depression.

(This bulletin is taken from an article by Robert Dunn and Alex Vincent, both of

Calgary, Alberta, originally printed in Issue 8 (3/94) of WoodCuts.)

Copyright 1998 to 2012 by Lee Valley Tools Ltd. and Veritas Tools Inc. All rights reserved.

Lee Valley Tools - Getting Started on a Chip Carving Project

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