What's inside
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A rebate plane cuts a stepped channel, or rebate, along the edge of timber. On a door frame, that rebate usually forms the stop that the door closes against, or provides a seat for a panel, lining, weather seal, or trim. The job is straightforward, but accuracy matters: a rebate that is too deep can leave a loose door stop, while one that wanders in width will show as an uneven gap around the door.
Choose the right rebate plane
A dedicated rebate plane has an iron that cuts across the full width of the sole, allowing it to work into a corner. Many have a fence to control the rebate’s width and a depth stop to limit how far the iron cuts. For occasional work, a combination or adjustable rebate plane is more versatile. A fixed-width plane is quicker to set and generally more predictable once sharpened.
| Plane type | Best use | Main trade-off |
|---|---|---|
| Fixed rebate plane | Repeated rebates of one width and depth | Less flexible for different door details |
| Adjustable rebate plane | Repair work and varying frame sizes | More setup and more parts to keep square |
| Router plane or chisel cleanup | Fine-tuning corners and small corrections | Not a practical substitute for removing most of the waste |
Before buying, check the plane’s maximum rebate width and depth. A common door stop rebate may be around 12 to 19 mm wide and 10 to 15 mm deep, but measure the actual door and frame rather than relying on a standard. A adjustable rebate plane is usually the sensible choice for one-off renovation work. If you regularly make frames to the same pattern, a fixed plane is often easier to live with.
Check the frame and mark it
Remove the door if it is already hung, and inspect the frame for nails, screws, paint, filler, or hardened glue. A plane iron will be damaged immediately by metal. If the frame is installed, protect nearby plaster and flooring, and make sure the jamb is firmly supported. Movement under the plane produces a wavy rebate.
Mark the rebate on the face and edge of each jamb. Use a sharp marking knife for the shoulder lines and a combination square and marking knife to carry the marks around the corners. Do not use a soft pencil line as your only reference; it can disappear under dust and is less precise.
Mark both the width and the depth. Then mark the waste side with small crosses. For a door stop, leave enough solid timber for the frame to remain stiff. On a narrow jamb, a rebate that is more than roughly one-third of the timber’s width may weaken the edge or leave too little support for the hinges and latch hardware.
Prepare and set the plane
Sharpen the iron before setting up. A practical edge for frame work is a flat primary bevel with a small secondary bevel, honed until it cleanly shaves end grain. The iron should project only a small amount at first—about 0.1 to 0.2 mm. A heavy cut makes it harder to keep the fence against the reference edge and increases the chance of splitting the jamb.
Set the fence so the plane cuts to the marked rebate width. Measure from the fence to the cutting edge, not from the side of the plane body. Set the depth stop to the marked line, then test the setup on scrap of the same species and thickness. Make the test rebate at least 150 mm long. Check its width with a rule or calipers and its depth with the square’s blade.
The fence should be tight but still adjustable. If it shifts during the cut, stop immediately and reset it; attempting to correct a wandering rebate usually makes the shoulder wider in some places and narrower in others.
Plane the rebate
Clamp the frame or brace it so the reference edge cannot move. Hold the plane with both hands, keeping the fence pressed firmly against the edge. Start with the toe of the plane fully supported. On a long jamb, use a pair of winding sticks or a straightedge to check that the timber itself is not bowed before you begin.
Take short, light strokes at the beginning and end of the cut. The ends are where a plane is most likely to break out the timber. You can reduce this risk by starting at the middle and working toward one end, then returning to the middle and working toward the other. Keep the plane level across the timber; tilting it changes the rebate depth and can leave a sloping bottom.
After several passes, brush away the shavings and check the shoulder. The knife line should remain visible and clean. As you approach the depth, reduce the cut until the depth stop begins to contact the timber consistently. Do not force the plane once the stop is engaged. A well-set plane should produce thin, continuous shavings rather than dust or torn chunks.
For a long installed frame, work in sections but overlap each section with light finishing strokes. Check the result every 300 to 450 mm with a straightedge. A small hollow is easier to correct than a high spot, but do not keep removing material until the depth is uniform if that would exceed your layout line.
Deal with corners and common failures
At a meeting corner, the rebates must intersect cleanly. Plane close to the corner, then use a sharp chisel held bevel-side down to pare the last fibres. A set of bevel-edge woodworking chisels is useful here, especially in the 12, 19, and 25 mm sizes. Do not use the chisel as a lever against the thin edge of the rebate.
If the rebate tears out, the timber may be reversing grain, the iron may be dull, or the cut may be too deep. Sharpen the iron, reduce the projection, and plane from the opposite direction. If the shoulder is ragged, re-establish the knife line and pare it lightly rather than trying to flatten it with more aggressive plane strokes.
If the finished door binds, first check where it touches with a slip of paper or marking chalk. Remove only the high area, taking passes of less than 1 mm. If the gap around the closed door is uneven, the problem may be a twisted frame or poorly hung door rather than the rebate itself. Correcting the plane work will not fix a jamb that is out of square.
Final checks and finishing
Test-fit the door before painting. Confirm that the door closes without force, the reveal is consistent, and the hinges and latch still align. Leave room for paint or varnish: around 2 mm clearance at the closing edges is a useful starting point, though existing doors and seals may require more.
Break only the exposed sharp arris with one or two light strokes of fine abrasive or a block plane. Keep the rebate bottom flat and clean. Seal freshly exposed end grain and timber before fitting weatherstripping or applying finish. For a single repair, a cheaper adjustable plane is perfectly adequate if it holds its settings and the iron can be sharpened. Spend more only when you need repeated accuracy, a longer sole for a large frame, or a better fence that will not drift during extended work.