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 In Tricks of the Trade

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I had a project on which I needed to rout out a large area about 38” deep. It was a wooden case for a Nook reader, and the eReader had to fit into the excavation.

I had poor luck with my power router. It failed miserably. I had poor visibility of the bit, and the tool was extremely aggressive.

I decided to break out my large router plane, but the area to be routed was too large for it to span the opening from edge to edge.

A light bulb went off, and I decided to make an acrylic auxiliary base for the router plane. The tool was already drilled with slots for an edge fence, so it was simply a matter of drilling the auxiliary base for 516” holes to align with these slots and another 114” hole for the router blade to pass through. I used two 14“x20 1” T-bolts, flat washers and wing nuts to fasten the base to the router. I had to counterbore the bottom of the base to fit the T portion of the T-bolt. I used a Forstner bit and chisel to shape the counterbore.

I eyeballed the hole that the blade came through – dumb. Let my experience be helpful to you. The blade came down on the plastic.  Measure where the blade will come down before you drill.

I used a 38” acrylic sheet about 6 12” x 9 12“, but you can vary the dimension to suit your situation. Just make it wide enough to span the work edge to edge when at the extreme.

I was quite happy with the added stability of the router and I was able to plane the excavation quickly and smoothly. I think I will also find this auxiliary base useful to excavate fields in relief carvings. –Walter Lees

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