PTB/KWJ900
-11-
Routing the bolt recess in the
male part of the joint
Location bushes in bolt
recess hole
Direction of
router travel
Quick action
clamp here
Underside of worktop
Postform edge
Worktop
Recess
Thickness
Depth
30
22mm
40
28mm
Best results are achieved when the
centre line of the bolt corresponds
to the centre line of the worktop.
Clamp jig securely to worktop.
Routing the bolt recess in the
female part of the joint
650
600
500
400
616
700
900
R
R
R
P
F
F
A
A
A
P
P
H
F
M
M
H
B
B
B
Location bushes in bolt
recess hole
Direction of
router travel
150mm
Underside of worktop
Quick action
clamp here
Cutting the Bolt Recesses
When the joint has been tested, proceed as
follows to cut the recess for panel butt
connectors on the underside of the worktop.
The same cutter and guide bush are retained
and used with the integral bolt recess slots in the
jig to produce the recesses for the panel butt
connectors. The bolt recess position can be
gauged approximately 150mm from the edge of
the postform edge, or where access is possible
with kitchen units. Mark with pencil both
positions on the underside of the worktop.
Insert the location bushes into the bolt recess
holes (B) as shown.
I
The template may need to be inverted when
cutting some bolt recesses.
I
Securely clamp jig to worktop.
I
The bolt recesses should be approximately
20mm deep although this will depend upon
the thickness of worktop.
I
Once one bolt recess is cut move jig over to
the remaining pencil lines and repeat.
I
Repeat the procedure for the male joint.
Strengthening the Joint
If the joint between the worktops is not
supported underneath, after some time the joint
may ‘sag’ and become misaligned; to reduce this
the joint should be reinforced with a loose
tongue or biscuit dowels. The biscuit jointing
cutter set Ref. 342, TR35 or C152 can be used
with a portable router. The size of biscuit used
should be No. 20.
Ref. BSC/20/100 (100 biscuits)
Ref. BSC/20/1000 (1000 biscuits)
A 650mm worktop should have at least 5 biscuits.
Underside View
MANU/PTB/900 v1.1 23/11/10 09:27 Page 11