3.
How to Select the Correct Size of Wire-O
WOB3500/MesDocuments/Corinne/Notices/WOB3500/Anglais
13
Wire-O
is supplied in eleven different sizes for the WOB3500 binding machine. These
range from 1/4” and 1
1
/
4
” sizes and are available in a variety of finishes and colours.
Request a brochure from James Burn International or your agent for the complete range.
Wire Sizes
The wires are numbered according to their size in sixteenths of an inch, e.g. wire
size 9 corresponds to 9/16” and wire size 6 corresponds to 3/8”.
The size of the wire required is obtained in the following manner.
Using the Following Formulae:
Imperial:
All 3:1 Pitch Wire Size
=
Book Thickness in 1/16”
(and 5/8 wire)
All 2:1 Pitch Wire Size
=
Book Thickness in 1/8”
(except 5/8 wire)
or
Metric:
All 3:1 Pitch Wire Size
= Book Thickness in mm + 1.6mm
(and 5/8 wire)
25.4
All 2:1 Pitch Wire Size
= Book Thickness in mm + 3.2mm
(except 5/8 wire)
25.4
Where the precise size is not available the nearest oversize wire can be used.
Example:
A book has a total thickness of 6mm, adding 1.6mm and dividing by 25.4 gives
0.3 inch. Therefore, No.5 - 5/16” - (8mm) wire can be used. (see table below).
