How to Prevent Snipe at the Start and End of Planed Boards
What's inside
As an Amazon Associate I earn from qualifying purchases. This post may contain affiliate links at no extra cost to you.
Snipe is the shallow dip a planer can leave near the leading or trailing end of a board. It happens when the board is not held level as it enters or leaves the cutterhead: the rollers pull it through, the unsupported end tips down, and the cutter removes a little extra wood. A few thousandths of an inch can be hard to see but easy to feel or find under a finish.
Some snipe is normal on many portable planers. The goal is to reduce it enough that you can cut it off, sand it out, or avoid it on finished parts. Start with the machine’s setup and your feeding technique before buying accessories.
Contents
Why snipe happens
A thickness planer’s infeed and outfeed rollers press the board against the bed while the cutterhead removes material. When only one roller is gripping a short board, or when the board’s end is unsupported, its weight can make it pivot. The cutterhead then takes a deeper bite at the end. The same thing can happen as the board exits and the infeed roller releases it.
Long boards exaggerate the problem because their unsupported ends have more leverage. A board that is bowed, twisted, or fed at an angle can also shift under the rollers. Dull or dirty knives, resin on the bed, and incorrect roller or bed adjustments can make feeding less consistent, though they are not always the root cause of snipe.
Set up the planer first
Unplug the machine before inspecting or adjusting it. Clean pitch and dust from the bed, and check that the knives or cutterhead inserts are sharp and seated correctly. A dirty bed increases drag; dull knives encourage tear-out and can make the board feed unevenly. If the planer has a bed roller adjustment, follow the manual rather than raising it by guesswork.
Check that the infeed and outfeed tables are aligned with the planer bed. Use a straightedge across the bed and each extension table, then adjust until the surfaces support a long board without a noticeable step. On many portable planers, extension tables are meant to be level with the bed or slightly raised at their outer ends, but the specified setting varies by machine.
Make a test pass on scrap and inspect both ends. If snipe is severe or appears mostly at one end, recheck table alignment, roller settings, and the board’s support before changing anything else. A consistent, small amount at both ends often points to the usual transition as the board enters and exits.
Support the board through the cut
Set roller stands or a long, flat support at the planer’s infeed and outfeed. Adjust them so the board stays level as it moves; a support set too high can lift the board, while one set too low lets it sag. Keep a hand on the board only where it is safe, and do not push down close to the cutterhead or reach over the machine.
For long stock, use a helper or additional supports. The board should travel straight and remain flat, not seesaw as its weight transfers from one support to another. If the planer is on a bench, make sure the bench and extension supports are stable and in the same plane.
Let the rollers feed the board once they have it. Pushing hard on the tail as it enters or pulling hard as it exits can change its angle and worsen snipe. Stand clear of the discharge path, keep fingers away from the opening, and follow the manufacturer’s rules for minimum workpiece length.
Choose a fix that fits the job
| Method | Best for | Trade-off |
|---|---|---|
| Align tables and add roller support | Routine work and long boards | Low cost, but setup takes time and stands need adjustment. |
| Feed boards in a continuous batch | Several boards of similar thickness | Can reduce snipe between pieces; requires consistent stock and careful spacing. |
| Leave extra length and trim ends | Parts where final length is known | Reliable and simple, but uses more material. |
| Use a sacrificial lead and trailing board | Short parts or stock that cannot lose much length | Can move the snipe onto scrap; takes suitable spacer stock and may not work on every planer. |
Use sacrificial boards carefully
On some planers, feeding a scrap board of similar thickness immediately before and after the workpiece helps keep the rollers engaged during the transition. The workpiece can still show a little snipe, but the affected area may be smaller. Keep pieces aligned and close together without forcing them into the machine, and check the manual: some machines specify minimum spacing or do not recommend this method.
Do not use a loose stack or a narrow offcut that can turn, jam, or get pulled in unpredictably. A sacrificial board is not a substitute for proper support, and it can waste time if the stock varies substantially in thickness. For occasional work, leaving extra length and trimming the ends is often the safer, simpler solution.
When an accessory is worth buying
If you regularly plane long boards alone, adjustable roller stands for woodworking can be more convenient than improvised supports. Check their height range, stability, and roller width; a stand that rocks or sits too low can create new feeding problems. For a shop that planes only occasionally, a sturdy bench, a helper, or careful board-by-board trimming may be enough.
Some portable planers have folding extension tables, while others accept longer support accessories. A planer infeed and outfeed table can help if it is made for your machine and can be adjusted accurately. Avoid buying one on the assumption that it will eliminate snipe: it supports stock, but setup and feeding technique still matter.
Plan the cut around the finished part
When the ends will be cut square later, plane the board a little long, then trim past the snipe. Leave enough allowance to remove the full damaged area; check each board rather than assuming the dip is always the same length. If the board must finish at an exact length, include that allowance when rough-cutting.
For pieces that cannot be shortened, test the setup on matching scrap before planing the final stock. Take modest cuts and inspect the ends after each pass. If a defect remains, a sharp hand plane or sanding block can remove a shallow dip, but sanding alone may take more material around the end than intended. On visible furniture parts, prevention and a planned trim allowance are usually more predictable than trying to disguise snipe afterward.
