Leigh rtj400 - Page 21

21
21
C
B
A
A
B
1
3
/8"
0.100
"
1
3
/16"
Joint Fit Adjustment
6-2 All routing starts with the eBush in the No.5 position
A
. Turning the eBush toward the No.10 position
B
results in
a tighter fit because the guide bushing is now wider. Turning the
eBush toward the No.0 position
C
results in a looser fit.
6-1 The Leigh eBush barrel is elliptical
A
, unlike plain circu-
lar template guide bushings
B
. When rotated, the effective
diameter of the barrel changes, allowing fit adjustments as small as
0.001"[0.025mm]. The e10 eBush is included with the RTJ400.
6-3 The Leigh eBush system is designed around the decades-old
Porter Cable/Black & Decker industry standard. Therefore you will
likely need to adapt your router table or router table insert plate to
accept a Leigh eBush with an insert ring that has a 1⅜" diameter
counter bore. See page 6 for details. Check with your router table
or router plate manufacturer as to what adaptation is required.
RTJ400 OPERATION
CHAPTER 6
The Leigh eBush
Note: Normal tolerances with bits, guide bushings and router runout will generally produce poor fitting joints. Leigh
elliptical guide bushings (e7 and e10) solve this problem.
Patents for all Leigh elliptical guide bushings: U.S. 8,256,475 UK GB2443974
6-4 Draw a line with a permament pen on the router table,
centered on the guide bushing opening at 12 o’clock and 6 o’clock
(shown in red for clarity only). This will ensure correct orientation
of the eBush to the insert ring
A
, the insert plate
B
, and the
router table
C
.
line
C
A
B