The Handy Shop Reference: Useful Facts and Figures for Every Woodworker
By Tom Begnal
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About this ebook
FEATURES
• Dozens of charts and lists providing key woodworking facts, figures and formulas at a glance
• Clear, quick-reference illustrations of angles, joints, mouldings, fasteners and more
• Demystifies woodworking math, including conversions and geometry
• Portable, durable format perfect for hands-on use in the shop
Tom Begnal
Tom Begnal is a life-long woodworker whose interest in the craft evolved into a full-time furniture business in northwestern Connecticut. He moved on to become the managing editor of The Woodworker's Journal magazine for more than fifteen years and eventually joined the editoral staff at Shopnotes in Des Moines, Iowa. His final stop was Fine Woodworking magazine where, among other things, he edited the Tools and Materials department. He has also written or edited woodworking and how-to books for several publishers including F+W Publications, McGraw-Hill, Rodale Press and Sterling Publishing. Retired, Tom still woodworks and lives in Connecticut.
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The Handy Shop Reference - Tom Begnal
An imprint of Penguin Random House LLC
penguinrandomhouse.com
Copyright © 2018 by Tom Begnal
Penguin supports copyright. Copyright fuels creativity, encourages diverse voices, promotes free speech, and creates a vibrant culture. Thank you for buying an authorized edition of this book and for complying with copyright laws by not reproducing, scanning, or distributing any part of it in any form without permission. You are supporting writers and allowing Penguin to continue to publish books for every reader.
Ebook ISBN 9781440354847
Edited by Patty Craft
Designed by Wendy Dunning, adapted for ebook by Cora Wigen
Illustrated by Hayes Shanesy
pid_prh_6.1_148340210_c0_r0
_148340210_
TABLE OF CONTENTS
Introduction
Chapter One
WOODWORKING MATH
Basic Geometry for Woodworkers
Fractions to Decimal Equivalents
Fractions to Metric Equivalents
Metric to Decimal Equivalents
U.S. Weights and Measures
Metric Weights and Measures
U.S. Equivalents and Metrics
Conversion Table
Miter Angles for Polygons
Determining Side Lengths for Polygons
Compound Angles
Enlarging Grid Patterns Using a Photocopy Machine
Circle Templates Around the House
Chapter Two
FURNITURE DESIGN
Common Woodworking Joints
General Rules for Joinery Design
Standard Furniture Dimensions
Understanding a Shop Drawing
Common Woodworking Abbreviations
Common Woodworking Symbols
Particleboard Shelf Spans
Factory-Made Pine Mouldings
Wood Screw Shank and Pilot Hole Drill Sizes
Lag Screw Shank and Pilot Hole Drill Sizes
Threaded Insert (Rosan Nut) Pilot Hole Drill Sizes
Clear Glass
Acrylic Sheet
Plastic Laminate
Chapter Three
WOOD
Commercial, Common and Botanical Names for Domestic Commercial Hardwoods
Standard, Forest Service and Botanical Names for Domestic Commercial Softwoods
Common and Botanical Names for Some Imported Hardwoods
How to Calculate Board Feet
Board Footage Chart
Softwood Lumber Grades
Softwood Lumber Standard Sizes
Typical Softwood Lumber Grade Stamps
Examples of Softwood Lumber Grade Stamps
Pressure-Treated Lumber Retention Levels
Typical Quality Mark for Pressure-Treated Lumber
Hardwood Lumber Grades
Standard Thicknesses for Hardwood Lumber (Rough and Surfaced)
Recommended Average Moisture Content
How to Determine Wood Moisture Content
Equilibrium Moisture Content
Wood Shrinkage
Time Required to Air-Dry Lumber To 20% Moisture Content
Hardness
Working Properties of Some Hardwoods
Approximate Relative Heartwood Decay Resistance
Steam Bending Table
Chapter Four
MANUFACTURED WOODS
Softwood Plywood
Hardwood Plywood
Particleboard
Medium-Density Fiberboard (MDF)
Hardboard
Chapter Five
ADHESIVES
Wood Bonding
Surface Preparation Guidelines
Glue Guidelines
Commonly Used Wood Adhesives
Properties of Common Names for Domestic Woodworking Adhesives
Chapter Six
TOOLS
Drill Speeds
Suggested Wood Lathe Speeds
Band Saw Blade Minimum Cutting Radius
Band Saw Blade Tooth Styles
Determining Band Saw Blade Length
Scroll Saw Blades
Saber Saw Blades
Pulley Formulas
Common Router Bit Profiles
Common Moulding Head Cutter Profiles
Table and Radial-Arm Saw Blades
Table-Saw Coving Cuts
Chapter Seven
SHARPENING
Sharpening Angles
Types of Bench Sharpening Stones
Comparison of U.S. and Japanese Grits
Selecting a Bench Sharpening Stone
Chapter Eight
FASTENERS
Wood Screw Head Options
Wood Screw Shank Diameters
Wood Screw Lengths and Commonly Available Screw Numbers
Drywall (Sheetrock) Screws
Particleboard and Medium Density Fiberboard (MDF) Screws
Converting Penny Size to Nail Length
Nail Gauges and Equivalent Diameters
Nails Per Pound
Standard Machine Threads
Machine Bolts
Machine Screws
Hanger Bolts
Dowel Screws
Lag Screws
Carriage Bolts (Square Necked)
Brads
Plain Washer Dimensions (for Lag Screws and Bolts)
Common Butt Hinge Sizes
Knock-Down Hardware
Chapter Nine
FINISHING
Coated Abrasives
Steel Wool Grades
Thinning Shellac
Choosing a Stain
Choosing a Top Coat
Top Coat Dry Times
Making a Tack Cloth
Chapter Ten
SAFETY
General Safety Rules
Safe Extension Cord Wire Gauges and Lengths
Noise in the Workshop
Working with Pressure-Treated Wood
Hazardous Woodworking Chemicals
Index
About the Author
Acknowledgments
INTRODUCTION
As we enjoy an evening in the workshop, it is easy to forget that the craft of woodworking encompasses a surprisingly large body of information. Much of that information is learned only through considerable practice and experience. And, once learned, it is usually applied to the task at hand with little thought or effort. An experienced woodworker knows, almost intuitively, what to do and how to do it.
But even veteran woodworkers understand that practice, experience and intuition are not always enough. Despite what seems to be second nature, it’s often necessary to find an important bit of information in order to move a project forward. Usually, however, that bit of information is found only after a lengthy search through a pile of woodworking books, magazines, owner’s manuals and shop-worn notes. And, of course, the search too often comes up empty.
This book is an effort to make that search considerably easier. Here, in a single volume, is an easy-to-understand compilation of the many facts, figures and formulas that are important to every woodworker. From shop geometry to lumber grades to drill press speeds, The Handy Shop Reference provides an extensive storehouse of valuable woodworking data.
This is a book to be used, not admired. Keep it near your workbench. My sincere hope is that you often find yourself reaching for it, and that it quickly provides you with all the information you need.
Have fun and work safely.
Chapter One
WOODWORKING MATH
BASIC GEOMETRY FOR WOODWORKERS
An understanding of basic geometry is useful to woodworkers. Indeed, when you consider that every woodworking project is made from parts that form straight lines, curved lines or a combination of the two, it is clear that geometry is very much a part of the workshop.
Angles
The space between two lines that meet is called an angle. An angle is usually measured in degrees.
Right Angle
The angle formed by a line perpendicular to another line. A right angle measures 90°.
Acute Angle
An angle measuring less than a right angle.
Obtuse Angle
An angle larger than a right angle, but less than 180°.
Polygons
A polygon is a closed plane figure that has three or more sides and angles. A polygon with all angles equal and all equal-length sides is called a regular polygon. Some of the common polygons are:
Triangles
A triangle is a polygon with three sides and three angles. The sum of the three angles is always 180°.
Right Triangle
A triangle with one angle at 90°
Scalene Triangle
A triangle with all sides unequal
Equilateral Triangle
A triangle with all sides of equal length.
Obtuse Triangle
A triangle with one angle obtuse (greater than 90°)
Isosceles Triangle
A triangle with two sides of equal length
Quadrilaterals
A quadrilateral is a polygon that has four sides and four angles. The sum of the four angles is always 360°.
Rectangle
A four-sided plane figure with four right angles
Square
A four-sided plane figure with four right angles and four equal-length sides
Rhomboid
A four-sided plane figure with all sides parallel, adjacent sides unequal, and usually having two acute angles and two obtuse angles
Rhombus
A four-sided plane figure with all sides equal-length and parallel, usually having two acute angles and two obtuse angles
Trapezoid
A four-sided plane figure with two sides parallel and two sides not parallel
Trapezium
A four-sided plane figure having no sides parallel
Other Polygons
Regular Pentagon
A plane figure having five equal-length sides and five equal angles
Regular Hexagon
A plane figure having six equal-length sides and six equal angles
Regular Octagon
A plane figure having eight equal-length sides and eight equal angles
Regular Decagon
A plane figure having 10 equal-length sides and 10 equal angles
Regular Dodecagon
A plane figure having 12 equal-length sides and 12 equal angles
Circles
A circle is a closed curve, with all points on the curve equally distant from the center.
Radius
A straight line extending from the center of the circle to any point on the circle
Diameter
A straight line that passes through the center of a circle and extends from one side of the circle to the other
Chord
A straight line connecting two points on a circle
Tangent
A straight line that touches a circle at only one point
Segment
That part of a circle cut off by a straight line
Area Formulas
Area is a measure of the amount of surface of an object. Square units of measurement (square inches, square feet, square millimeters, square meters, etc.) are used to describe area.
Triangle
Area = ½B × H
where: B = length of the triangle base; H = height of the triangle
Example
B = 12"
H = 8"
Area = ½(12) × 8
= 6 × 8
= 48 square inches
Square
Area = S × S
where: S = length of the sides
Example
S = 6"
Area = 6 × 6
= 36 square inches