An Infinity Mega Dado & Planer Router bit is my bit of choice for this task for a number of reasons. I use a Triton 3.25 hp router mounted to an Infinity Large Router Baseplate. The final piece of the sled is the router itself. You can see that my sled is made almost entirely of 6" wide strips of 3/4" MDF. The key is to oversize the sled in all three dimensions so that the router can plane the entire surface. The Planing Sled can be tailored to the slab or project being flattened. The dimensions can easily be modified for a slab of just about any size. There's a 3D SketchUp model you can download from our website and modify to suit your needs. I made this slot by marking out the opening, drilling a 1" hole at each corner and cutting the rest with an Infinity 1/4" Spiral Up-Cut router bit at the router table.
I like to have a little more room and make the slot 4" wide and long enough so that the bit doesn't interfere when the router is at either end of the bridge. You can use the Mega Dado Planer bit to make a zero-clearance slot. The bridge also has a slot for the router bit. The ends of the bridge overlap the box sides to allow clamping the bridge in position with each router pass. The bridge is long enough to straddle the sled box. It's wide enough to securely hold the router mounted to an Infinity large router blaseplate (11-5/8" square). The second part of the sled is a bridge that holds the router and rides on top of the sled box. I also rough-cut the slab to size because I don't want to waste time and energy flattening large areas that will just be cut off later. If I plan to cut the slab down to a smaller size or even into a couple of pieces I try to give at least another week to acclimate after the initial rough cutting to allow the slab to adjust to its new form. Because slabs are typically larger and thicker I try to give them at least a week of acclimation per inch of thickness before I start cutting. This goes for both urban/salvaged lumber and slabs from more traditional sawmills alike.ĭon't forget that once you have the slab, give it time to acclimate to your shop just like any other piece of lumber. I've found it can take double that for such large chunks of timber. The old adage of drying lumber for one year per inch of thickness goes out the window for air-dried slabs as well. Depending on the size and species, a slab may take as many as two years of air drying before it can make its way into a kiln. Good slabs take time and experience to be properly cut and dried. This may be the hardest part but with urban lumber becoming more popular and available, there's a chance that there's a company salvaging and cutting slabs in your area.īut be careful when choosing a slab. The obvious first step to any slab project is to obtain a slab. or any other large surface that will not fit through the planer. The overall experience has been great! Ordering and shipping was easy! The item came packaged appropriately but without a bunch of waste.The 2" cutting diameter of the Infinity Mega Dado & Planer bit make it perfect for flattening large surfaces like a live edge slab. This plane is manufactured with precision and exceptional materials. They all lack an adequate method of fine adjustments. The jig itself is well made and the strong magnets really grip my saw blade keeping the blade in line. The buying process was simple and my questions were promptly replied to. The consistency it delivers is is what I was lacking before I started using this product. The KM Magnetic Dovetail Jig has taken my dovetails to the next level for me. From the zero-deflection to the micro-adjustments to the adjustable height. It packs a punch when and where needed.īill F. This is a small and ‘mighty mallet’! The interchangeable heads, I put one on each side, and the perfect weight is truly amazing. Anything from KM Tools fits that criteria. Always looking to add a GOOD tool to my arsenal.
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