Adding a decorative profile to the edge of a tabletop or glued-up panel is one job where the router table really shines. The large table supports the workpiece, setup is straightforward, and a wide range of router bits lets you create anything from a simple roundover to an elaborate molded edge.
But installing a bit and making a pass isn't enough to guarantee a clean profile.
A flat table, proper fence setup, light cuts, consistent pressure, and the right feed rate all contribute to a smooth, crisp edge. Here are seven ways to get better results when routing decorative profiles at the router table.
1. Start With a Flat Router Table
A router table provides a large, stable surface for supporting a panel, but that only works if the tabletop itself is smooth, flat, and free of anything that might catch the workpiece.
A slight hump may be manageable, but a concave tabletop can cause problems. As the panel passes over the router bit, its center may ride above the table instead of remaining firmly supported. The result can be a profile that changes depth along the edge.
Pay particular attention to the router insert plate. It should sit flush with the surrounding tabletop so the workpiece can't catch, bump, or dip as it crosses the opening.
Finally, check for protruding screws, rough spots, or other irregularities that could interfere with the workpiece.
Router Insert Plate Not Sitting Flush?
A loose or uneven insert plate can cause workpieces to catch and make it difficult to rout a consistent profile. Learn how to eliminate movement and level the plate using tape, leveling screws, or adjustable plate levelers.
LEVEL YOUR ROUTER TABLE INSERT PLATE → How to Level and Adjust a Router Table Insert Plate
2. Use the Router Table Fence
Many edge-profile bits have a bearing that can guide the cut directly along the edge of a workpiece. That's convenient, but when the setup allows it, a router table fence can provide a more stable guide.
A bearing follows whatever edge it's riding against — including small irregularities. Those imperfections can be transferred to the finished profile.
The fence provides a long, straight reference surface that's independent of the spinning router bit.
For this approach to work well, both the fence and the edge of the panel need to be straight.
WOODSMITH TIP: A bearing-guided bit is still useful when you're routing curved workpieces or profiles where a fence isn't practical. For straight panel edges, however, the fence provides a stable reference.
3. Rout the Profile in Multiple Passes
Except for very small profiles, don't try to remove all the material in a single pass.
Several light passes put less load on the router and bit, reduce chipping, and generally leave a smoother surface.
How many passes you need depends on the size and shape of the profile and the wood you're routing. Regardless of the number, make the final pass a very light skim cut that removes only fine shavings.
There are two ways to sneak up on the final profile. You can raise the router bit between passes, or you can set the final bit height first and gradually move the fence back to expose more of the cutter.
I prefer adjusting the fence.
Once you've set and tested the final bit height, you don't have to disturb it. Simply move the fence between passes until the full profile is exposed.
WOODSMITH TIP: Finish with a skim cut. Save a small amount of material for the final pass. A light finishing cut puts less stress on the wood fibers and can leave a noticeably smoother surface.
4. Rout the Edges in the Right Order
Routing across end grain can cause chipout where the router bit exits the cut.
If you're profiling all four edges of a panel, use that to your advantage.
Start by routing one of the end-grain edges. Then rout the adjoining long-grain edge. The long-grain pass removes any chipout left at the corner by the first cut.
Continue working around the panel so the following cut cleans up the previous corner.
If you're routing only three edges, plan the sequence so you make an end-grain cut first, rotate the panel counterclockwise for the long edge, and finish with the opposite end.
Use a backer board on that final end-grain pass to support the fibers where the router bit exits.
5. Maintain Consistent Downward Pressure
Even with the bit and fence perfectly adjusted, your technique can change the depth of the profile.
This is particularly noticeable at corners. It's natural to ease up on downward pressure as a workpiece enters or leaves the cut. When that happens, the profile may become slightly shallower, leaving adjoining edges that don't match at the corner.
Apply firm, consistent downward pressure from the beginning of the cut to the end.
If you notice an inconsistent profile, another pass with steady pressure may clean it up.
A featherboard can make this easier by helping hold the panel firmly against the tabletop throughout the cut.
6. Find the Right Feed Rate
How quickly you move the workpiece past the router bit affects both the quality of the cut and the finished surface.
Feed too quickly and you may end up with chipout or a rough surface.
Feed too slowly and the router bit can leave burn marks.
One common mistake is slowing down as you approach the end of a cut, particularly when routing end grain. The intention may be to prevent chipout, but lingering in one spot can result in burning.
Use your preliminary passes to establish a feed rate that produces a clean cut without burning. Then concentrate on maintaining that pace from beginning to end.
7. Plan Ahead for Complex Edge Profiles
Some decorative profiles can't be created with a single router bit.
Instead, two bits are used in sequence to create a more complex molding.
When combining profiles, rout the larger or outer profile first. This establishes a baseline that you can use to position and adjust the second router bit.
Make test cuts on scrap before routing the project. Small changes in bit height can have a big effect on how two profiles blend together, so it's worth dialing in the setup before committing to the finished panel.
Better Edge Profiles Start Before the Cut
A clean routed profile isn't simply the result of a sharp router bit. The entire setup contributes to the finished edge.
Start with a flat, catch-free router table and use the fence whenever it's practical. Remove material gradually, pay attention to the order in which you rout the edges, and maintain consistent pressure and feed rate throughout each pass.
For more elaborate edges, plan the sequence of router bits before you start.
Get those details right and you'll spend less time sanding away chatter and burn marks — and end up with smooth, crisp edge profiles that meet cleanly at the corners.
Stop Router Table Tearout Before It Starts
Chipout can ruin an otherwise clean edge profile. Learn five ways to prevent router table tearout, including reading the grain, taking shallow passes, supporting end grain, reducing the fence opening, and handling difficult cuts.
LEARN HOW TO PREVENT ROUTER TEAROUT → Get Cleaner Cuts at the Router Table
