Random Shop Jigs and Projects #1: Slab Flattening Router Jig Using Kreg Universal Bench Rails

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Blog entry by BoilerUp21 posted 11-26-2018 03:10 AM 4114 reads 0 times favorited 2 comments Add to Favorites Watch
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I had an extra set of Kreg Universal Bench Rails laying around and decided they might make good rails for a slab flattening jig that i have been intending to make for larger pieces that won’t fit in my planer. I don’t want to spend $700 for the woodpeckers slab flattening mill, although it looks like a great setup.

The sturdy rails lend themselves well to both the main rails and the trough guides for the router. Clamps through the existing dog holes in my 48”x64” table secure the rails level and help hold the work pieces in place four routing. I am able to flatten up to 30” wide pieces using this jig. Kreg should think about getting into this themselves as they could easily adapt their existing equipment to make something great for half the cost of the woodpeckers mill.

2 comments so far

View MrRon's profile


5931 posts in 4091 days

#1 posted 11-26-2018 05:26 PM

I made a slab flattening jig to flatten the table of my CNC router. For rails, I used steel bed rails, the kind that hold up your bed mattress. The table I was flattening was 36” x 72”. This was a one off task.

View Tucker Grose's profile

Tucker Grose

29 posts in 660 days

#2 posted 11-30-2018 01:06 AM

I’m interested in following this as I have some large 3”x 2 ft x 10 ft slabs of black walnut that I want to make a table with.

-- Tucker - Hazelton, BC, Canada

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