Leigh FMT PRO, User Manual

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Chapter 3 Frame Mortise & Tenon Jig User Guide
THE FMT PRO JIG
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Do not rout at face level.
3-47
If you have never used your router before, be sure to follow
the router manufacturer’s instructions for its use. Make plenty
of simple open-face practice cuts before you try to use the router
on the Leigh FMT Pro.
■
3-48
Stock for use on the Leigh FMT Pro should generally be
straight, flat, of even thickness and width with square ends and
edges, except where design issues dictate otherwise.
Please note that even small ridges (caused by damaged plan-
er blades) can cause noticeable misalignment of “flush” joint
faces.
3-49
You will want to test the jig, so prepare some stock with a
thickness
➀
of about 2
1/2
to 3 times the bit diameter
➁
,
For example:
1
⁄
4
" [6mm] bit
5
⁄
8
" to
3
⁄
4
"[15-19mm]
5
⁄
16
"[8mm] bit
3
⁄
4
" to
15
⁄
16
"[20-24mm]
3
⁄
8
"[10mm] bit
15
⁄
16
" to 1
1
⁄
8
"[25-30mm]
1
⁄
2
"[12mm] bit 1
1
⁄
4
" to 1
1
⁄
2
"[30-36mm]
and a stock width
➂
of say, 1
1/2
bit diameters greater than the
selected guide length
➃
.
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2
3
4
Wood Preparation