How To Build Frameless Base Cabinets

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⏱ Time 4–6 Hours

Difficulty Intermediate

💰 Cost ~$80 / cabinet

Key Tool Kreg Pocket Hole Jig

Quick Summary — Frameless Base Cabinet Carcass

• European frameless cabinets are simpler to build and give you more usable interior space than face frame cabinets
• One 4’ x 8’ sheet of 3/4" plywood builds a standard 30" wide cabinet carcass
• Calculate your dimensions before you cut — the formula section covers every component
• Full 3/4" back, two front stretchers, and a sub toe kick give the carcass its strength
• Complete build in 9 steps: plan dimensions, make your cuts, edge band all pieces, then assemble — no complex joinery required

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Jump to: Standard DimensionsBase OptionsBack OptionsCalculate DimensionsCut ListAssembly StepsFAQ

When I first tried to learn how to build cabinets I had a hard time finding all the information I needed. There was a little bit here, a little bit there, but nowhere did I find it all in one place. This post is my attempt to fix that. It’s a long read but if you’re serious about building your own cabinets it’s well worth the time. To build matching wall cabinets, see my post on How To Build Frameless Wall Cabinets.

Frameless cabinets are easy and affordable to build. They also provide more usable storage space than face frame cabinets. The design I find easiest to build and install is made of 3/4" plywood throughout — including a full back — with two four-inch stretchers at the top. Up to a 30" wide standard base cabinet carcass can be built out of a single sheet of 4’ x 8’ plywood.

The cabinet carcass is the main structural box — sides, bottom, back, stretchers. No doors, drawer fronts, or drawer boxes yet. The carcass can be configured for doors, drawers, open shelving, or any combination. We’re focusing on the standard configuration shown above. One book worth mentioning: Build Your Own Kitchen Cabinets by Danny Proulx. I haven’t read it myself but it comes up often in cabinet-building circles.

Standard Cabinet Dimensions

Before you start cutting anything, know what size you’re building. These are the standard dimensions for common applications.

Application	Cabinet Height	Cabinet Depth	Counter Overhang
Kitchen Base	34-1/2" (for 36" countertop)	24"	1" to 1-1/2"
Bathroom Vanity	33" to 36"	21"	1"
Desk / Office	28-1/2" (for 30" surface)	20"–24"	1"–2"
Toe Kick (standard)	4-1/2" tall	3" deep	N/A

What You’ll Need

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Materials

3/4" hardwood veneered plywood — 1 sheet per 30" cabinet

Pocket hole screws — 1-1/4" coarse thread for 3/4" stock

Wood glue (Titebond II or III)

Iron-on edge banding — veneer to match your plywood

5mm shelf pins (bag of 20)

Tools

Table saw or circular saw + guide

Read

Kreg Pocket Hole Jig

Read

Kreg Shelf Pin Drilling Jig

Buy

Drill, combination square, tape measure

Supplies

• Sandpaper (120 / 180)
• Bar clamps or pipe clamps (4 minimum)
• Corner clamps (helpful if building solo)
• Digital caliper — plywood is often thinner than marked
• Pencil and straightedge
• Combination square

On Plywood Grade3/4" hardwood veneered plywood is the right call here. You’re already saving a significant amount over semi-custom cabinets — most of which are built from 5/8" particle board — so the upgrade to proper plywood is worth it. Use A1 grade for stained or natural finishes; lower grades are fine if you’re painting or building shop storage. If you use MDF, glue every joint in addition to pocket screws.

Cabinet Base Options

There are four ways to handle the base of a frameless cabinet. Your choice affects how you build the carcass, how you level during installation, and how you apply the finished toe kick.

Standard Base

The sides and back extend to the floor. The front is notched 3" deep and 4-1/2" tall for the toe kick. A sub toe kick runs between the sides inside the notch for support and to give you a nailing surface for the finished kick board. Each cabinet needs to be shimmed individually during installation. This is what most semi-custom cabinets look like.

Standard Base — No Toe Kick

Same as above but without the notch. Use this for built-in desks, library cabinets, or anywhere a toe kick doesn’t make sense. A decorative board the same thickness as your doors covers the base of all cabinets after installation for a clean continuous look.

Adjustable Cabinet Legs

Blum leg levelers and Blum kick plate clips make installation easy on uneven floors. Height adjustments are simple during and after installation. The kick board clips onto the legs after everything is leveled. Good for damp environments (basement slab, garage) since the wood stays off the floor. Adds a small per-cabinet cost but the Blum hardware is worth it.

Separate Base Platform

A 2x4 frame with a 3/4" plywood top gives you a 4-1/4" platform (3-1/2" + 3/4"). Level the platform once, then set all your cabinets on it. No individual shimming per cabinet. The carcasses themselves are simpler to build — no toe kick notch to cut. This is my recommendation for most kitchen and bathroom builds.

Tom’s RecommendationFor most kitchen builds, go with the separate base platform. You shim one platform instead of six or eight individual cabinets, and your carcasses are simpler to build because you skip the toe kick notch entirely. The platform costs a few 2x4s and one sheet of plywood. On a big kitchen that’s a lot less hassle than adjustable legs on every cabinet.

Cabinet Back Options

Full 3/4" Back

The strongest option and the one used in this guide. Full 3/4" plywood throughout means one material, consistent joinery, and a cabinet that can handle heavy stone countertops and the appliances that go on top of them. Plan your cut sheet well and the cost difference over a nailer back is minimal.

Nailer Back

Two 3/4" nailer strips at the top and bottom of the back instead of a full panel. Saves material, works fine for shop or garage cabinets where you don’t need an enclosed back. You still have something solid to screw into the wall.

1/4" Back with Nailers

Nailer strips plus a 1/4" plywood panel stapled over them. Lighter and cheaper than a full back, gives you the enclosed look. Common in manufactured cabinets. The 1/4" panel can bow over time — not a structural issue but worth knowing.

Step 1: Calculate Your Dimensions

This is the part most people want to skip. Don’t. Getting the math right before you touch a saw means every cabinet in a run fits together without shimming and gap-filling. The formulas below work for any size cabinet, not just the 30" example we’re using here.

Measure Your Actual Plywood ThicknessPlywood is almost never the thickness marked on the sheet. “3/4"” plywood commonly measures 23/32" or even 11/16". Use a digital caliper to get your actual thickness, then use that number in every formula below. Using the nominal size can throw your dimensions off by 1/8" across a cabinet, which compounds across a run.

A note on edge banding: most iron-on edge banding is under 1/32" thick. I don’t factor it into my dimensions as long as it’s applied consistently before assembly. Wood moves. No cut is perfect. Consistency matters more than chasing fractions of a millimeter.

Cabinet Height

Determined by your application. Standard kitchen work surface height is 36". With a 1-1/2" thick countertop, your cabinet needs to be 34-1/2" tall.

Cabinet Height Cabinet Height = Desired Surface Height − Countertop Thickness Example: 36" − 1-1/2" = 34-1/2"

Cabinet Depth

Standard kitchen depth is 24" including the door (23-1/4" carcass + 3/4" door). Bathroom vanity standard is 21". Check your appliance specs before committing — slide-in ranges and dishwashers sometimes have depth requirements that affect your design.

Cabinet Width

This is your call based on your layout. Our example uses 30" — the widest you can get from a single 4’ x 8’ sheet.

Component Dimensions

Our example: 30" W × 34-1/2" H × 24" D, 3/4" plywood throughout, standard base, full back. Grain direction follows the height on all pieces.

Cabinet Sides (cut 2) Side Height = Cabinet Height − External Base Height Side Width = Cabinet Depth − Door Thickness Example: 34-1/2" − 0 = 34-1/2"  |  24" − 3/4" = 23-1/4"

Cabinet Bottom (cut 1) Bottom Height = Cabinet Width − (2 × Side Thickness) Bottom Width = Cabinet Depth − Back Thickness − Door Thickness Example: 30" − 1-1/2" = 28-1/2"  |  24" − 3/4" − 3/4" = 22-1/2"

Cabinet Back (cut 1) Back Height = Bottom Height (same as above) Back Width = Side Height − Stretcher Thickness Example: 28-1/2"  |  34-1/2" − 3/4" = 33-3/4"

Shelf (cut 1, if using) Shelf Height = Bottom Height Shelf Width = Bottom Width − 1/2" Example: 28-1/2"  |  22-1/2" − 1/2" = 22"

The 1/2" reduction keeps the shelf clear of the doors with room for seasonal wood movement

Stretchers (cut 3) and Sub Toe Kick (cut 1) All share the same height as the Cabinet Back Height (28-1/2") Stretcher width: 3"–4"  |  Sub Toe Kick width: matches toe kick notch height (4-1/2") Example: 3 stretchers at 4" × 28-1/2"  |  1 sub toe kick at 4-1/2" × 28-1/2"

Cut List — 30" Standard Base Cabinet

This cut list is for the 30" W × 34-1/2" H × 24" D example. All pieces are 3/4" plywood. Use the formulas above to adjust for your dimensions.

Part	Qty	Height	Width	Notes
Side	2	34-1/2"	23-1/4"	Edge band front edge before assembly
Bottom	1	28-1/2"	22-1/2"	Edge band front edge before assembly
Back	1	28-1/2"	33-3/4"	No edge banding needed
Shelf	1	28-1/2"	22"	Edge band front edge; pins installed after assembly
Stretcher	3	4"	28-1/2"	Edge band front edge on the 2 front stretchers
Sub Toe Kick	1	4-1/2"	28-1/2"	No edge banding needed
Total Parts	9	All from one 4’ × 8’ sheet of 3/4" plywood

Step 2: Attach Side to Back

Apply edge banding to the front edge of both cabinet sides. Then drill pocket holes around the top and sides of the Cabinet Back and attach it to one side as shown. The bottom of the Back is flush with the bottom of the Side. Leave a 3/4" gap at the top — that’s where the rear stretcher will sit.

Step 3: Attach the Bottom

Apply edge banding to the front edge of the Bottom, then drill pocket screw holes and attach it to the Side and Back assembly. The bottom of the Bottom piece sits flush with the toe kick notch. Use your square at every corner — a box that’s out of square at this stage stays out of square.

Check Square at Every StepClamp everything before driving any screws. Measure diagonally corner to corner in both directions — if those two measurements match, the box is square. If they don’t, rack the assembly slightly before the glue sets. Checking at each step is much easier than trying to fix a twisted box at the end.

Step 4: Attach the Other Side

Attach the second Side using the pocket holes already drilled in the Back and Bottom. No new drilling needed — that’s the beauty of drilling the pocket holes in the Back and Bottom pieces rather than the Sides.

Step 5: Attach the Stretchers

Apply edge banding to the front edge of the two front stretchers. Drill pocket holes and attach all three stretchers with the pocket holes facing up to minimize their visibility. The rear stretcher sits flush at the back, the two front stretchers go at the top front of the cabinet.

In this example the cabinet will have one full-width drawer across the top and two doors below. Spacing the second front stretcher depends on your desired drawer height. Standard top drawer height is 6". With overlay hardware, leave a 1/4" gap at the top to clear the countertop — so the second stretcher sits 6-1/4" down from the top of the cabinet.

Step 6: Install the Sub Toe Kick

The Sub Toe Kick supports the cabinet bottom, stiffens the whole carcass, and gives you a nailing surface for the finished kick board after installation. Drill pocket holes and attach it between the Sides at the front of the toe kick notch.

Step 7: Drill Shelf Pin Holes and Install Shelf

Use the Kreg Shelf Pin Jig to drill holes in the front and back of each Side. Position them 37mm from the front edge — use the short side of the jig without the fence. For the rear holes, flip the jig around. Leave at least 3"–4" clearance at top and bottom for door hinge hardware.

Edge band the front of the Shelf, insert shelf pins at the height you want, and drop the shelf in. The cabinet is done.

What to Build Next

With your base carcasses built you need matching uppers — see How to Build Frameless Wall Cabinets. For the drawers, head to How to Build Drawer Boxes.

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Frequently Asked Questions

What thickness plywood should I use for frameless base cabinets?

3/4" hardwood veneered plywood throughout. Some manufacturers build with 5/8" to cut costs, but if you’re building your own cabinets you might as well do it right. You’re already saving a lot over semi-custom, so the 3/4" is worth it. It also makes pocket hole joinery stronger and more predictable.

What is the standard height for a base cabinet?

34-1/2" for the carcass if you’re targeting a standard 36" kitchen work surface height with a 1-1/2" thick countertop. Bathroom vanities run 33" to 36" depending on preference — I’ve built them at 35" for taller people and it makes a noticeable difference in daily comfort.

What is the standard depth for a base cabinet?

24" for kitchen base cabinets (23-1/4" carcass + 3/4" door), 21" for bathroom vanities. Check your appliance specs before you commit — slide-in ranges and dishwashers sometimes have specific depth requirements.

Frameless vs face frame cabinets: which should I build?

Frameless for most DIY builds. More usable interior space, simpler construction (no face frame to build and attach), and a cleaner contemporary look. Face frame cabinets have a more traditional appearance if that’s what you’re going for, but frameless is faster and easier to build in my experience.

What base option do you recommend?

For most builds, the separate base platform. You level one simple 2x4 frame with a plywood top, then all your cabinets sit on it square and level without individual shimming. The platform costs a few 2x4s and a piece of plywood. On a large kitchen build the time savings over shimming six or eight individual cabinets is significant. It also simplifies the carcass — no toe kick notch to cut into the sides.

If the floor is concrete or damp, adjustable Blum leg levelers are worth the per-cabinet cost. The hardware is solid and keeps the wood off the floor.

Do frameless cabinets need a back?

For kitchen and bathroom cabinets I always use a full 3/4" back. The strength is worth it, especially under heavy stone countertops. For garage or shop cabinets that will be screwed to the wall anyway, nailer strips are fine. The 1/4" back with nailers is a reasonable middle ground when you want the enclosed look without the material cost.

How do I keep the cabinet square during assembly?

Clamp before you drive any screws. Use bar clamps or pipe clamps to hold pieces together, and corner clamps if you’re working alone. Once clamped, check each corner with a combination square, then measure diagonally corner to corner in both directions. Equal diagonals = square box. If they’re off, rack the assembly gently before the glue sets. Check at each step as you go rather than waiting until the end.

Can I build a base cabinet without a table saw?

Yes. A circular saw with a straight-edge guide gives you accurate rip cuts in plywood. It takes a bit more setup time per cut than a table saw, but the results are just as good if you’re careful with your layout.

How many cabinets can I get out of one sheet of plywood?

A 30" wide cabinet fits from a single 4’ x 8’ sheet — that’s what the cut plan diagram above shows. Narrower cabinets give you more flexibility. Always lay out your cut plan on paper before you touch the saw. Saving one sheet on a kitchen build is typically $60–$80, so the 20 minutes of planning pays off.