7.5mm
2mm
15mm
3mm
DJ300
-11-
1
/
2
” (12.7mm) Dovetail Template
(21.5 mm pitch with 3mm offset line)
No. of whole tails
1
2
3
4
5
6
7
8
9...
21.5
43
64.5
86
107.5
129
150.5
172
193.5
Optimum width of timber in mm
ie Pitch x No. of tails = Width (when 3mm offset line used).
1
/
4
” (6.35mm) Dovetail Template
(11.3 mm pitch with 2mm offset line)
No. of whole tails
1
2
3
4
5
6
7
8
9
11.3
22.6
33.9
45.2
56.5
67.8
79.1
90.4 101.7
Optimum width of timber in mm
ie Pitch x No. of tails = Width (when 2mm offset line used).
Timber Widths
■
Any width of timber up to 300mm wide can be
dovetail jointed. To obtain a symmetrical joint
with full tails and pins at each end, see the
chart on the right for the recommended widths
of timber.
■
The edge guides have a built in offset to
produce exact fitting dovetail joints. Their
position is adjustable to enable a symmetrical
joint to be obtained with timber widths that are
not ideal. Their position can be simply be
judged by eye.
Making a Setting Block
To eliminate unnecessary measurements being
made should you change the settings of the jig
(e.g. when using other templates or adjusting the
jig for awkward widths of timber). One should
make a setting block which should be kept safe
and used to set up the jig to create a standard
1
/
2
” (12.7mm) dovetail joint or optional
1
/
4
”
(6.35mm) dovetail joint.
Make the setting block as follows:
■
Use timber that is uniform in thickness and
has a square end.
■
Draw a line 3mm from the left and right edge.
(2mm for
1
/
4
” (6.35mm) dovetail template).
This will be used to set the left and right edge
guides.
■
Draw a line 15mm from the front edge.
(7.5mm for
1
/
4
” (6.35mm) dovetail template).
This offset will be used to set the template
position.
Setting-up the jig with this block is shown
overleaf.
1/2” (12.7mm) Dovetail
1/4” (6.35mm) Dovetail
Summary of Contents for DJ300
Page 1: ...DJ300 DOVETAIL JIG...
