Three Ways to Flatten Your Slab, and Which is Best — Blacktail Studio
Walnut Avenue Woodworking - I've set up a router planing jig to flatten rough cut slabs that won't fit on the jointer nor through the planer. It works great and is a
Router Sled Hardware Kit - Lee Valley Tools
Plane Your Wood Slabs With a Planing Sled That You Build : 13 Steps (with Pictures) - Instructables
Router Leveling Jig | Woodsmith
How to Make Your Router Into a Surface Planer | JLC Online