The_Woodworker_and_Woodturner_-_October_2019

A-Z of timber terms & jargon TECHNICAL

http://www.getwoodworking.com October 2019 The Woodworker & Good Woodworking 81

Saw mounted in a saw sharpening vice

Using an Axminster Rider chisel

171 ⁄ 2 in cooper’s croze

WoodRiver wood chisels

A well-used cooper’s chiv with 2in iron

Chipboard flooring

are available and should be used. If chipboard is
exposed to high levels of moisture and humidity,
it can break down and lose its integral strength.

Chip marks
These are small, surface indentations that
sometimes occur while planing wood to thickness.
In general, they are caused by poor extraction not
clearing away some of the chips as they are cut.
Rather than being sucked off the planed surface,
some will drop onto it and then go under the
pressure/exit feed rollers where they get pressed
into the surface and thus cause a ‘chip mark’.
Often they are quite apparent but sometimes
you need to tilt the wood surface to catch the
light and see if you can spot them. Chips arriving
on the surface of the wood as it exits the planing
machine are a good indicator that there may be
marks. These little indentations are often hard
to remove and will spoil a surface. If they occur,
check out the extraction system to make sure
there are no part or full blockages or, think
about upgrading to a higher powered bit of kit.

Chops or saw chops

A set of saw chops is a simple vice made to

hold a hand saw blade while it is sharpened.

They are made from wood with two long jaws

that support the saw teeth edge while working on

them with a file. There are free-standing versions

but the most common ones fit into a bench vice.

Chisels

Well, I’m sure we’ll all have some of these! They

come in a range of sizes and styles for specific

or varied use. One key factor is that they will work

best when sharp. I regularly sharpen all my chisels

because I get so annoyed with myself if, when I go

to use a specific one, I find I’ve put it back blunt!

A good set of chisels will last a lifetime, so it’s

advisable to buy the best you can afford.

Chiv

This is a specialist hand plane that is curved to

run round the inside of a coopered barrel, top and

bottom, to smooth out the staved surfaces ready

for grooving. Following this another tool, called

the ‘croze’, will make a groove all-round the inside.

The groove will take the circular lid or bottom.

To finish off the barrel, a curved ‘topping’ or ‘sun’

plane trims the ends of the staves flat and level.

Chonkers

A word used by lumbermen and lumberjacks,

to describe small logs.