Inset cabinet doors sit flush inside the cabinet frame opening rather than overlapping it — giving kitchens and furniture a clean, traditional look. It's one of the more demanding DIY cabinet jobs because the tolerances are tight, but with patience, the right tools, and careful measuring, a confident homeowner can achieve a great result.
What Is an Inset Fit?
An inset door sits inside the face frame or carcass opening, with a small, even gap (called a reveal) all the way around — typically 1.5 mm to 2 mm on each side. This is different from an overlay door, which simply laps over the front of the cabinet. Because the door must fit precisely inside the opening, any error in cutting or hanging is immediately visible.
Tools and Materials You'll Need
- Tape measure and a good quality combination square
- Pencil and marking gauge
- Hand plane or a router with a straight bit (for fine trimming)
- Drill and drill bits
- Chisel and mallet (for mortising hinges, if using butt hinges)
- Clamps
- Inset hinges — either traditional butt hinges or face-frame inset cup hinges (also called concealed hinges set to 0° overlay)
- Sandpaper (120 and 180 grit)
- Safety glasses and hearing protection
You can find a good range of hinges and hardware at Bunnings or Mitre 10.
Step 1 — Measure the Opening Accurately
Measure the cabinet opening in at least three places — top, middle, and bottom for width; left, centre, and right for height. Use the smallest measurement as your reference, as openings are rarely perfectly square.
- Subtract 3–4 mm from the width (to allow a 1.5–2 mm gap on each side)
- Subtract 3–4 mm from the height (for top and bottom gaps)
Write these figures down before cutting anything.
Step 2 — Cut and Fit the Door Blank
If you're making the door from scratch, cut it to your calculated size using a table saw or circular saw with a fine-tooth blade. If you've purchased a pre-made door, you may need to trim it down.
Once cut, test-fit the door in the opening before doing anything else. It should slide in with a little resistance. Check the gap is even all around using a 1.5–2 mm feeler gauge or a couple of playing cards as a spacer.
Trimming for a Perfect Fit
If the gap is uneven, use a hand plane or router to remove small amounts from the edges. Work slowly — it's easy to take too much off. Always plane or rout with the grain where possible to avoid tear-out.
Step 3 — Choose and Position Your Hinges
For inset doors, you have two main hinge options:
| Hinge Type | Best For | Notes |
|---|---|---|
| Butt hinges | Traditional/shaker style, solid timber frames | Require mortising; more visible |
| Concealed cup hinges (0° inset) | Modern carcass cabinets, MDF doors | Adjustable after fitting; hidden when closed |
For butt hinges, position them 150–200 mm from the top and bottom of the door. Mark the hinge positions on both the door edge and the cabinet frame, then chisel out shallow mortises so the hinge leaf sits perfectly flush.
For concealed cup hinges, drill a 35 mm flat-bottomed hole (using a Forstner bit) in the back face of the door, following the manufacturer's template — usually a set distance from the door edge depending on the hinge brand — check the manufacturer's template for the exact measurements. Attach the mounting plate inside the cabinet.
Step 4 — Hang the Door
With butt hinges, screw one leaf to the door first, then hold the door in position in the opening and mark the frame. Screw the frame leaf in place. Use a bradawl to start screw holes to avoid splitting the timber.
With concealed hinges, clip the door onto the mounting plates and use the built-in adjustment screws to dial in the fit:
- Side adjustment — moves the door left or right
- Depth adjustment — moves the door in or out (flush with the frame)
- Height adjustment — moves the door up or down
Adjust until the reveal is even all the way around.
Step 5 — Check, Sand, and Finish
Open and close the door several times. It should swing freely without binding and close flush with the frame face. If it binds, identify where — look for shiny rub marks — and plane or sand that area lightly.
Once happy with the fit, remove the door, sand all edges smooth, and apply your chosen finish (paint, stain, or clear coat) before re-hanging. This protects the door edges from moisture, which is especially important in NZ kitchens and bathrooms where humidity can cause timber to swell. For finishing products, Resene and Dulux both offer suitable timber coatings.
When to Call a Professional
Inset fitting is unforgiving — if the cabinet frame itself is out of square, or if you're working with expensive timber or custom joinery, mistakes can be costly. Consider hiring a qualified cabinet maker or joiner if:
- The cabinet opening is badly out of square and needs remediation
- You're fitting multiple doors and want a consistent, professional result
- The doors are part of a kitchen renovation that may require building consent (check with your local council — some structural or plumbing-related kitchen work may need consent under the NZ Building Code)
- You're unsure about any step in the process
A skilled local cabinet maker can save you time and material waste. You can find qualified tradespeople in your area on tradedirectory.co.nz.
Safety note: Always wear safety glasses when drilling or chiselling, and hearing protection when using power tools.
