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A router template is supposed to make repeatable work easy: clamp a guide in place, run a bearing-guided bit or follow a bushing, and cut the same shape every time. Burning happens when the bit rubs instead of cuts. The usual causes are excessive depth, a dull cutter, a slow feed rate, poor chip clearance, or a template setup that forces the router to stay in one place too long.
The fix is not simply “turn the router faster.” A safe, clean cut comes from matching the bit, speed, depth, template, and feed rate to the material.
Choose the Right Template Method
There are two common ways to follow a template. A pattern bit has a bearing that rides against the template or an existing edge. A guide bushing mounts to the router base and follows the template opening, while the bit cuts inside it. Each has different requirements.
| Method | Best for | Main advantage | Main drawback |
|---|---|---|---|
| Bearing-guided pattern bit | Flush trimming and edge patterns | Fast setup and direct tracking | Bearing can collect resin or lose contact |
| Guide bushing | Mortises, inlays, and enclosed shapes | Works with plywood or plastic templates | Requires offset calculations |
| Router table template setup | Small repeat parts and production work | Stable, consistent feed direction | More setup and greater kickback risk |
For simple edge copying, a bearing-guided router bit is usually the least complicated option. For a pocket or opening, use a guide bushing and make the template wide enough to support the router base.
Prepare the Template and Workpiece
Use a stable template material. MDF, hardboard, acrylic, and good-quality plywood all work. Thin, flexible sheet goods are a problem because the router can tilt or the template can deflect under the base. For a handheld router, 1/4-inch template stock is a practical minimum; 1/2 inch is better when the guide bushing must ride on an enclosed opening.
Make sure the template edge is smooth and square. A rough or damaged edge transfers every imperfection to the workpiece. Sanding the template edge is not a substitute for cutting it accurately. If you need several identical parts, spend time making one clean master template rather than trying to correct each part afterward.
Clamp the template securely at multiple points. Double-sided woodworking tape can work on clean, flat surfaces, but it should supplement clamps rather than replace them on large cuts. A template that shifts even 1/16 inch can ruin a part and may pull the router into a climb cut.
Support the workpiece fully. If the bit exits through the bottom, place sacrificial plywood underneath. This prevents breakout and keeps the workpiece from flexing as the cutter leaves the edge. Remove dust and finish buildup from the template edge before routing.
Set Bit Depth in Shallow Passes
Do not remove the full thickness in one pass unless the material is very thin and the bit is designed for it. A useful starting point is to limit each pass to about 1/8 inch in hardwood and 3/16 inch in softwood. For a deep mortise or flush-trim operation, several light passes are slower but produce less heat and put less load on the router.
Keep the final pass especially light—around 1/32 to 1/16 inch when possible. This removes the remaining fuzz without forcing the bit to carry a heavy load. On a flush-trim job, make sure the bearing contacts the template throughout the cut. If the bearing drops below the template, the bit can suddenly remove material from the wrong area.
When using a guide bushing, calculate the offset. The bit does not follow the template opening directly. The difference between the bushing’s outside diameter and the bit diameter determines how far the cut is offset from the template. Test the setup on scrap before touching the finished workpiece.
Control Speed and Feed Rate
Router speed and feed rate work together. A router spinning too fast with a slow feed produces fine dust, dark marks, and a hot bit. A feed that is too fast causes chatter, rough edges, and possible stalling. You want chips, not smoke or powder.
| Bit diameter | Typical starting speed | Practical note |
|---|---|---|
| 1/4 inch or smaller | 20,000–24,000 RPM | Small cutters can run fast, but still need steady movement |
| 3/8–1/2 inch | 16,000–20,000 RPM | Good general range for template work |
| 3/4 inch and larger | 12,000–16,000 RPM | Lower speed reduces rim speed and heat |
These are starting ranges, not universal settings. Follow the bit manufacturer’s limit. Larger bits have much higher cutting speed at the edge, so running them at maximum RPM can overheat the carbide and scorch the wood.
Feed firmly enough to make continuous chips. If the router sounds strained, reduce the depth or move slightly faster. If the cut is rough and the motor sounds unloaded, you may be feeding too quickly or using a dull bit. Avoid pausing with the cutter against the workpiece. If you must stop, pull the bit clear first.
Prevent Burns and Resin Buildup
Burn marks often start where the router dwells: inside corners, tight curves, and the point where you begin or end a pass. Keep the router moving and use relief holes or a jigsaw to remove most waste from tight internal corners. A straight bit cannot cut a truly square inside corner without overcutting.
Clear chips with a shop vacuum connected to the router if possible. Packed chips recirculate around the cutter and raise its temperature. This matters especially with plywood, MDF, melamine, and resinous softwood.
A clean, sharp bit is more important than a high-powered router. If the edge looks polished, the cut has become noisy, or burning continues after you correct the feed rate, replace or sharpen the bit. A router bit cleaner can remove pitch, but it cannot restore a damaged cutting edge.
Use the Correct Cutting Direction
With a handheld router, feed against the bit’s rotation. Looking down at a standard router, that normally means moving left to right when routing the outside edge of a workpiece, and right to left around an inside opening. This keeps the router pulling into the material instead of trying to run away.
Climb cutting—feeding with the rotation—can produce a clean surface in a small controlled section, but it is easy for the router to grab and lurch. Avoid it for normal template routing, particularly on narrow parts or with a large bit. If you need a final cleanup pass, take only a very small amount and keep both hands firmly on the router.
Test Before Cutting the Final Part
Make a scrap test using the same material and template thickness. Check the template offset, cut depth, edge quality, and whether the router base remains supported at every point. Test a complete inside corner and an outside corner, not just a straight section.
For occasional work, a basic fixed-base router and a quality router guide bushing set may be all you need. A variable-speed router is worth paying more for if you regularly use large bits, cut plastic, or work with thick hardwood. The cheaper option is fine when the bit is small, the cuts are shallow, and your template is rigid and accurate.
Finally, wear eye and hearing protection, keep the cord away from the bit, and wait for the cutter to stop before setting the router down. Clean template routing is mostly controlled setup—not brute force.