Quick answer: To make a wooden picture frame, choose straight, dry hardwood or poplar, cut a rabbet (a step) along the back edge to hold the artwork, cut four pieces with 45-degree miters, glue and clamp the corners, reinforce them with nails, splines or corner keys, then sand, finish and install the glass or backing. The key to a frame that closes tightly is measuring the opening from the inside edge of the rabbet and cutting all four miters accurately.
Learning how to make wooden picture frames is worth it because a handmade frame costs little and can be sized exactly to your artwork, which solves a problem every painter eventually meets: standard frames rarely match the odd dimensions of a handmade panel or a custom canvas. With basic tools and some patience, you can build a clean, sturdy frame in an afternoon, then let the glue cure overnight.
This guide explains how to build a wooden picture frame from start to finish: choosing wood, planning measurements, cutting the profile and rabbet, mitering, joining, finishing and fitting. It also covers a simpler frame style that needs only straight cuts, plus the problems that most often ruin a first frame. If you are framing a canvas painting and want to compare building with buying, the buyer’s guide to wooden frames for canvas paintings lays out the options.
Decide What Kind of Frame You Are Making
Different artwork needs different frames, and your choice controls the tools you need.
Traditional mitered frame with a rabbet
This is the classic style: four pieces joined at 45-degree angles, with a stepped groove along the back to hold glass, mat and artwork. It suits works on paper, photographs and thin panels. It is the most common answer to the question of how to make wood picture frames.
Floater frame for canvas
A floater frame holds a stretched canvas with a small gap around it, so the painting appears to hover inside the frame. The canvas sits on the rabbet, and the front of the frame stays open. This is a popular finish for gallery-wrapped canvases.
Simple butt-joint frame
Instead of miters, the ends are cut square and one piece overlaps the other. This is easier and uses fewer tools, and it suits a rustic or modern look.
Tools and Materials
- Wood: Straight, dry boards free of knots and twist. Poplar, pine, maple, oak and walnut are all common choices.
- Measuring and marking: Tape measure, combination square, pencil and a marking knife.
- Cutting: Miter saw or miter box with a fine-tooth saw. A table saw or router makes the rabbet faster, but a hand plane or rabbet plane can do it.
- Joining: Wood glue, band clamp or corner clamps, brad nails or small finishing nails.
- Finishing: Sandpaper in 120, 180 and 220 grit, wood filler, stain or paint, and a protective finish.
- Fitting: Glass or acrylic sheet if needed, mat board, backing board, points or turn buttons, and hanging hardware.
- Safety: Safety glasses, hearing protection and a dust mask.
Choose wood with straight grain. Warped boards produce frames that twist and open at the corners. Let lumber sit indoors for a few days before cutting so it adjusts to your room’s humidity.
Plan the Measurements
Careful math prevents the most common failure: a frame that is too small or too large for the artwork.
Measure the artwork
Measure the width and height of the piece, including any mat. Say your artwork is 16 by 20 inches and you want a 1/8-inch gap on each side so the artwork can expand slightly with humidity.
Calculate the rabbet opening
The rabbet opening is the space at the back where the artwork sits. For the 16 by 20 piece with a 1/8-inch allowance, the opening should be 16-1/4 by 20-1/4 inches.
Calculate the length of each piece
With mitered corners, each piece is measured along its longest edge, which is the outer edge. The formula is:
Each piece has a long point (the outer edge) and a shorter inner edge. The length you need along the rabbet wall equals the rabbet opening for that side. The long point is longer than that by the molding width measured from the rabbet wall to the outer edge, once at each end. For example, if the molding measures 1-1/2 inches from rabbet wall to outer edge, the 20-1/4 inch side needs a piece with a long-point length of 23-1/4 inches.
Many builders skip the arithmetic by cutting one miter first, laying the piece against the artwork and marking the second cut directly. Marking from the artwork or a test opening is often more accurate than relying on numbers alone.
Choose the frame width and depth
A frame 1 to 2 inches wide suits most small to medium pieces. Make the frame deep enough to hold the artwork, glass and backing: usually at least 3/4 inch for a standard picture, more for a canvas.
Step-by-Step: Build a Mitered Wooden Picture Frame
Step 1: Mill or select the stock
Choose a board with the width and thickness you want. If you have a table saw, rip the board to the final width. If you buy ready-made molding, skip ahead to cutting the rabbet, or buy molding that already has one.
Step 2: Cut the rabbet
The rabbet is a notch along the back inside edge. A typical size is 3/8 inch deep by 1/2 inch wide for flat artwork. For a canvas, make it deeper and wider so the canvas stretcher bars fit.
Cut the rabbet on the full board before cutting the pieces. Use a router with a rabbeting bit, a table saw with two passes, or a hand rabbet plane. Test on a scrap piece first. A rabbet that is too shallow will not hold the artwork and backing.
Step 3: Sand before assembly
Sand the faces and edges of the board with 120-grit and then 180-grit paper. Sanding is much easier when the pieces are straight than after they are joined. Avoid rounding the edges that will meet at the miters.
Step 4: Cut the first miter
Set the saw to 45 degrees. Cut one end of the first piece so the angle slopes outward away from the rabbet. The rabbet side should face up on the saw table or against the fence in a consistent way so every piece is cut the same. Hold the board firmly against the fence and let the blade stop before lifting.
Step 5: Mark and cut the opposite end
Measure along the rabbet wall from where the first miter meets it to the opening length you need, mark it, and cut the opposite end at 45 degrees in the other direction. The two ends should form opposing angles, like the sides of a trapezoid.
Step 6: Cut the matching piece
Cut the second piece for the same dimension. Place a stop block on your saw so repeated cuts match exactly. Lay the two pieces side by side and check that they are the same length.
Step 7: Cut the other pair
Repeat the process for the second dimension. When you finish, lay all four pieces on a flat surface in frame order. Dry-fit the corners and check each corner for gaps. A gap means the angle is slightly off.
Step 8: Dry fit and adjust
Use a band clamp or corner clamps to hold the frame together without glue. Check that the frame is square by measuring the diagonals. Both diagonals should match. If they do not, one of the sides is off by a small amount, and trimming the longer piece fixes it.
Step 9: Glue the corners
Apply a thin coat of wood glue to each miter face. Because end-grain absorbs glue quickly, many woodworkers brush on a thin pre-coat, let it soak in for a minute, then apply a second coat. Clamp the frame, wipe away squeeze-out right away with a damp cloth and leave it overnight.
Step 10: Reinforce the corners
A mitered corner has little long-grain contact, so glue alone is weak. Common reinforcement methods include:
- Brad nails: Drive two small nails across each corner, from the outside edge. Pre-drill if the wood is hardwood.
- Splines: Cut a thin slot across each corner and glue in a strip of contrasting wood. It adds strength and a decorative detail.
- V-nails or corner keys: Small metal or wooden pieces pressed across the joint on the back.
Step 11: Fill and sand
Fill nail holes with wood filler matched to your finish. Once dry, sand the whole frame smooth with 180-grit and then 220-grit paper. Ease sharp edges slightly, but keep the corners crisp.
Step 12: Finish the frame
Apply stain, paint or clear finish according to the product directions. Test on a scrap piece of the same wood. For a natural look, a wipe-on oil or varnish works well. For a painted frame, prime first, then apply two thin coats. Let everything cure completely before putting the artwork in, since fresh finishes can stick to glass and paper.
Step 13: Fit the glass, artwork and backing
Clean the glass or acrylic, set it in the rabbet, then add the mat and artwork. Place backing board behind it and secure everything with framing points, turn buttons or small brads. Add a dust cover if you want a finished back. Attach D-rings and wire about one-third of the way down from the top of the frame.
Building a Floater Frame for a Stretched Canvas
A floater frame follows the same steps, with a few differences:
- Cut the rabbet deeper than the stretcher bars so the canvas sits slightly below or flush with the front.
- Make the rabbet wide enough to leave a gap of about 1/4 inch between the canvas edge and the frame.
- Join the corners as for a standard frame.
- Fasten the canvas from behind with offset clips or screws through the stretcher bars into the frame’s rabbet.
- Paint the inside of the frame a dark color so the gap looks like a shadow line.
Measure the stretcher bar thickness first. Stretcher bars vary, commonly from about 3/4 inch to 1-1/2 inches, and your rabbet depends on this. If you are framing a finished canvas painting, you may also want to read how to pair a frame with the artwork. The guide to choosing wooden frames for canvas paintings covers sizing and style choices.
A Simpler Alternative: Butt-Joint Frame
If you do not have a miter saw, a butt-joint frame requires only square cuts.
- Cut two long pieces to the full outer height of the frame.
- Cut two shorter pieces equal to the outer width minus twice the board’s width.
- Glue and screw or nail the short pieces between the long ones.
- Reinforce with pocket screws or corner brackets.
- Sand and finish.
The end grain of the short pieces will show on the sides, which suits a rustic or industrial look.
Choosing the Right Wood
| Wood | Look | Workability | Notes |
|---|---|---|---|
| Poplar | Pale, slightly green tone | Easy | Good for painted frames |
| Pine | Light, knotty | Easy | Dents easily; choose clear boards |
| Oak | Strong grain | Moderate | Stains well; open grain shows |
| Maple | Pale, fine grain | Moderate | Hard; can burn when cut |
| Walnut | Dark brown | Moderate | Often finished with clear oil |
| Cherry | Reddish-brown | Moderate | Darkens with light exposure |
Common Problems and Fixes
Gaps at the corners
Usually caused by miters that are slightly under or over 45 degrees. Recheck the saw setting with a test cut on scrap. Small gaps can be filled with a mix of sanding dust and glue, but large gaps mean recutting.
Frame is not square
Check opposite sides for equal length and compare diagonals. Adjust clamps before the glue sets.
Frame twists or warps
Use dry, straight stock and seal all sides of the wood with finish to slow moisture changes.
Artwork does not fit
Measure the rabbet opening, not the outside of the frame. Always add a small allowance for wood expansion.
Splitting near nails
Pre-drill small holes in hardwood and use thin brads.
Safety Tips
- Wear safety glasses and hearing protection when using power tools.
- Clamp small pieces; never hold them with your hand near the blade.
- Wear a dust mask when sanding and cutting.
- Follow manufacturer directions for finishes, and ventilate the room.
FAQs
What wood is best for making picture frames?
Poplar is a popular choice for painted frames because it is easy to work. Oak, maple, walnut and cherry are common for stained or clear-finished frames. Choose straight, knot-free boards.
How do I make a picture frame without a miter saw?
Use a hand miter box and fine-tooth saw, or build a butt-joint frame with square cuts and pocket screws.
How do I measure for a picture frame?
Measure the artwork’s width and height, add a small allowance of about 1/8 inch, and use that as the rabbet opening. Then add the frame’s visible width on each side to get the outer dimensions.
How deep should the rabbet be?
For flat artwork with glass and backing, around 3/8 inch deep is common. For a stretched canvas, make the rabbet at least as deep as the stretcher bars.
How do I make a frame corner stronger?
Add splines, corner keys, V-nails or brads across the miter. Glue alone on a mitered end-grain joint is relatively weak.
How long should the glue dry?
Most wood glues set in about an hour and cure fully in 24 hours. Leave the frame clamped for at least the minimum time shown on the bottle.
Final Thoughts
A well-made wooden picture frame comes down to accurate measurement, clean miters, strong joints and patient finishing. Test your cuts on scrap, dry-fit before gluing, and give the glue and finish plenty of time. Once you have built one, the same method scales to larger paintings and different profiles.
If you would rather compare handmade options with ready-made ones, see the wooden canvas frame buying guide for styles, finishes and sizing advice.
