book in progress by Irena Swanson

(currently divided into five volumes)

Table of contents as of 08 December 2018:

Outline of the method and vocabulary 7

Getting started with tube piecing 8
On strip cutting 8
Bias facts 9
What is a tip angle? 9
Tip angle construction 10
Scooting offset 11
Efficient mass marking of scooting offsets 12
A note on precision in scooting and sewing 12
Finishing pre-tubes: pressing and trimming 13
Converting a pre-tube into a tube 14
On the pressing of tubes 15
Cutting the primary wide tube into primary narrow tubes 15
Optional clipping of seam allowances 17
Some quick projects with primary narrow tubes 18

Joining narrow units into wider ones 21
Tubes at the sewing machine 21
Overall designs from narrow tubes to wide tubes 22
Seam shift 23
Edge shift 24
Mass marking of edge shifts on pieced tubes and pieced strips 26
Mass marking of edge shifts on non-pieced strips 27
Another method for mass marking 29

From a tube back to a flat piece 31
Converting a wide tube into one or more flat pieces 31
Quick projects from joining two narrow tubes 34
The making of the next family of narrow tubes 36
Summary of the tube piecing process 38

Further streamlined tricks 40
Measuring lengths 40
Angles 41
On tubes and rows 42
Organization of pieces 44
Seaming 45
Unusual seam allowances 47
Pressing 48
Doubling the strip set width (or tripling, or ...) 50
The multi-tape method 52
Strip extensions 56
Chart for keeping track of projects 58

Design elements for tube piecing 59
On formulas and adjusting them 59
Calculating 60
A very brief trigonometry refresher 60
Drawing your design, calculating 62
Circumference of primary tubes 63
How many primary narrow tubes in a primary wide tube 64
Number of batches of primary wide tubes 64
Fabric requirements 64
Relation between seam and edge shifts 65

Traditional blocks with tube piecing potential 67

Index 70


Chapter: Rectangle constructions with tube and strip piecing 11
Four-patch with enhanced strip piecing and with tube piecing 11
Nine-patch with enhanced strip piecing 22
Nine-patch with tube piecing 29
A possibility with nine-patch design with tube piecing 36
Rail fence 38
Zigzag (modified rail fence) 43
Courthouse steps 49
Bento boxes, or courthouse steps II 60
Log cabin 63
Log cabin in scrappy look 75
Log cabin look 85
Courthouse spiral with enhanced strip piecing 89
Twenty-five-patch and double Irish chain blocks 97
Woven squares with strip piecing 103
Strip-pieced rows of squares in parallel squares 106
Argyle pattern with strip piecing 109

Index 115


Parallelogram projects 16
All-over diamonds in blue 16
Diamonds in pink and purple 18
A run through many examples, with many modifications 20
Zigzag 34
Hearts and flower buds 40
Tumbling blocks 45
Japanese puzzle 52

Room for vertices: parallelograms and triangles 59
Rows of half parallelograms, i.e., rows of triangles 60
Blue diamond border 61
Parallelograms in rows 63
Rows of parallelograms 69
Framed diamonds: all-over and in rows 72

Parallelogram designs with no vertex gobbling 80
Diamond in a rectangle block 80
Grandmother's pride: Three by three diamonds in a square 88
Two by three diamonds in a parallelogram 97
One by r diamond rows in slanted parallelograms 98
Two by five diamonds in a square 102
Two by four diamonds in a rectangle 106
Chimney sweep 108
Seamless double hourglass block 115
Seamless double hourglass block: different method 117
Seamless triple hourglass block 120

Further projects with parallelograms 123
Rows of four-patch blocks on point 123
Four-patch block on point in a square 125
All-over four-patch blocks on point 131
Indiana puzzle, snail's trail 135
Milky way 138
Rows of squares in squares 142
Rows of squares in diamonds 147

Design elements for parallelograms 161
Slants of rows in an all-over parallelogram design 161
On cutting across secondary wide tubes, and slants 162
Final dimensions of a parallelogram quilt top 165
Choosing the cutting angle \theta across the (secondary) wide tube 166
Cutting angle with specified numbers of wraps 168
More on the trimming down of a parallelogram design 168
Parallelogram construction numbers 169
Symmetric parallelogram construction numbers 172
Parallelogram design with exceptional strip widths: outline 173
Exceptional addition for no vertex gobbling along two sides 176
Instructions for no vertex gobbling along two sides 178
Sewing instructions for no vertex gobbling 181
Exceptional strip width additions for no vertex gobbling 183
Exceptional edge shifts for no vertex gobbling 187
Parallelogram design with no vertex gobbling: drawing 188
Slits and cuts for parallelograms with no vertex gobbling 193
Parallelogram design: edge triangles of different colors 195
Parallelogram design: edge triangles of same color 197
Derivation of the second exceptional parallelogram addition E_2 200
Derivation of the third exceptional parallelogram addition E_3 202

Index 205


Triangles via tube piecing 17
Core steps in the construction of rows and of tubes of triangles 18

Projects with tubes of triangles 20
Construction of tubes of triangles 20
On using tubes of triangles 21
All-over triangles in orange and turquoise 24
Rows of brown triangles from fat quarters 28
Ralli triangles 30
Other color schemes and angle combinations 33
Thousand pyramids with different angles 35
Cupid's darts (or groves of trees) 42
Hexagons in sixths 46
Hexagons in halves, and something else 50
All-over triangles in diamond and zigzag shapes 54

Flying geese and stars 63
Flights of flying geese 63
Sarah's choice and the evening star blocks 77
Non-symmetric flying geese 85

Rows with even numbers of triangles 87
Construction of rows with an even number of triangles 87
Generalities about rows of half-square triangles 88
Half-square triangles in blocks 90
Half-square triangles in long rows 100
Half-square triangles: all-over design 105
Cut glass dish quilt 107
Lady of the lake 109
Ohio stars 112
Maple leaf blocks 122
Bear's paw 127
Pinwheels (in halves) 130
Pinwheels in rows 133
Double pinwheels 142
Diagonal flight 152
Paired peaks 158
Vertical stars 160
Blue triangle border 165
Ocean waves 168
Roman stripes 174
Rows of triangles 184

Design elements for triangles 191
How one triangle is formed 191
Rows of triangles with different angles 193
Pressing for triangle design 193
On the two types of triangle constructions 194
Triangle construction numbers 195
Making more rows, more triangles per row 198
Making fewer but longer rows of triangles (multi-tape sewing) 198
Justification of angled flying geese formulas 200

Index 205


More constructions with triangles 12
Hourglass block overview 12
Rows of hourglass blocks I 12
Hourglass blocks: alternate color scheme 20
Modification of the hourglass row construction 26
Rows of further-triangled hourglass blocks 27
Rows of hourglass blocks and rows of squares 33
Squares of three half-square triangles (or quarters of double pinwheels) 37
Double pinwheels (constructed in halves) 40
Hearts 45
LeMoyne stars with co-stars 50
Intertwined paired peaks 56
Rows of square web blocks on point 61
Multiplay 67
Kaleidoscope 75
Pieced pyramids, one by one 77
Rows of pieced pyramids, two types 83
Multiplay with rows of slanted pieced pyramids 91

Rows with odd numbers of triangles HERE: only one test 96
North wind 96
Half-square triangles of four half-square triangles 98
Half-square triangles of nine half-square triangles 100
Half-square triangles of sixteen half-square triangles 102
Ocean waves, revisited 105
Ocean waves, a version with more triangles 106

Appendix: Designing rows with an odd number of triangles 109
Vocabulary for rows with odd numbers of triangles 109
Design for rows with odd numbers of triangles 111

Index 115

  Tube piecing

       Book: current table of contents

         by Irena Swanson