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Porter Cable Router Fence |
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Model # 4269 & Model # 42700 |
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The Porter Cable Router
Guide is a well-built, sturdy, and highly accurate accessory.
For cutting radiuses, I've often used a Porter Cable router with
a PC Router Guide attached to a 1x4 trammel arm.
To use the fence with a trammel arm,
the guide must be reversed then fastened to the to the trammel arm.
I made a wooden transition block, which I screwed to the guide. |
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| I also notched the transitional block
to accept a 1x4, so it's easy to change out the trammel arm (which
happens for almost every job). The transition block is about 1 1/4
in. thick, that allows the trammel arm to sit flat on the work table,
while the router is sitting on 3/4 in. stock. |
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| Remember, when you lay out the holes in your trammel
arm, add for the thickness of the router bit. |
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| The outside of the router bit cuts
the inside of the radius; the inside of the router bit cuts the
outside radius. I use an aggressive up-cutting 1/2 in. bit,
so the trammel-point hole spacing for 3 1/2 in. casing is 4 in.
The other holes in that trammel arm are for flutes, which are cut
with the same set-up, but a different bit. |
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| The PC router guide works so well that we've adapted
them for use with our Bosch 1613 Plunge Routers (a much more user-friendly
tool). We tapped the bar stock at the centers for the Bosch
router, and drilled holes to fasten the adaptor to the router guide. |
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