Key Features
No-Test-Fit Dadoes This jig uses the actual workpiece to set the cut width, so you skip guessing with undersized bits and stop wasting plywood on test passes. Wide Capacity Range The 32-1/2 inch Woodpeckers dado jig handles long cabinet and casework cuts, while still closing down for short 5 inch dadoes. Built Like a Fixture Phenolic guide rails, stainless hardware, and stainless clamping pads give you a shop-grade router accessory that is meant to stay accurate over the long haul.
Overview
The Woodpeckers EWDJ-32-20 Exact Width Dado Jig – 32-1/2 Inch is a precision router jig built for cutting dadoes that actually fit real plywood and sheet goods. This is a router accessory designed for cutting accurate dado joinery in cabinetry, shelving, and casework. Model Number: EWDJ-32-20. If you build cabinets, bookcases, shop fixtures, or built-ins, this tool solves a problem every woodworker runs into: sheet goods rarely match their nominal thickness, so a groove that should fit usually needs trial-and-error before it does.
The whole point of this jig is that it takes measuring out of the setup. Instead of trying to match a router bit to whatever the plywood manufacturer decided “3/4 inch” means this week, you use the actual stock as the gauge between the edge guides. After an initial trim pass matched to your router, the guide bushing follows the rails and the bit cuts a dado sized to the material in your hands. That means no scrap setup pieces, no repeated test cuts, and a lot less time fussing over fit.
The 32-1/2 inch format matters if you build larger cabinets, wider shelving units, or deeper casework. Woodpeckers also notes that this size was added for users who need more reach than the smaller versions. Even with that larger capacity, the jig can still close down to cut a dado as short as 5 inches, so it is not just for oversized work. It also cuts dado widths from 3/8 inch up to 1-1/2 inch, which covers a broad range of common panel and divider sizes.
For blind joinery, the built-in stops at each end of the jig let you control router travel without having to rig up separate stop blocks. The engraved scale is there to speed up setup, and the offset scale does double duty by sliding out so you can set your router bit depth while accounting for the jig thickness. That is the kind of detail that saves time because it cuts out little math mistakes that can throw off a clean cabinet job.
Build quality is where this jig separates itself from disposable shop accessories. The guide rails are machined from solid phenolic, the same material Woodpeckers uses in its premium router tables. The hardware, adjustable stops, offset scale, and offset indicators are stainless steel. All four corners use wide stainless steel clamping pads to hold the jig securely, and one corner is fixed at 90 degrees so you can keep the dado square to the workpiece without grabbing a separate square during setup.
Woodpeckers also added replaceable zero-clearance blocks at each end of the jig to help reduce splintering and tear-out. That matters when you are working with veneered plywood or prefinished panels where chip-out can ruin a part fast. The sacrificial edge guides are designed to last through multiple projects and only need replacement if you switch to a different router bit and guide bushing combination.
Compatibility is straightforward. The jig comes with a precision-machined 1/2 inch diameter Porter-Cable style template guide bushing and a matching spacer for the first trim cut. If your router does not accept Porter-Cable style bushings, Woodpeckers states that any 1/2 inch guide bushing used with a 3/8 inch router bit will work. That gives you flexibility across a range of routers, while keeping the cutting logic simple and repeatable.
Who should buy this? If you routinely build cabinets, bookcases, closet systems, built-ins, or shop furniture and want tighter fitting dado joinery without setup drama, this jig earns its place. It is especially useful for woodworkers who work with different plywood brands and thicknesses and are tired of chasing fit with undersized bits. At 13.0 lbs, it is not a throw-in-the-drawer accessory. It is more like a dedicated shop fixture for serious woodworking and repeatable routing work.
Dial In Blind Dadoes Without Extra Setup
If your project calls for clean stopped grooves instead of through cuts, this setup gives you control without homemade stop blocks or guesswork. The built-in end stops help you place blind dadoes where they belong and stop the router where it should.
- Built-in stops limit router travel for blind joinery
- Easy-to-read engraved scale speeds setup on repeat work
- One fixed 90 degree corner helps keep the cut square to the panel
Fit Real Plywood, Not the Label
The big win here is fit. Because the jig uses the actual shelf or divider stock to set the opening, your routed groove matches what you are installing instead of what the tape measure says it should be.
- Cuts dado widths from 3/8 inch to 1-1/2 inch
- Closes down to cut dadoes as short as 5 inches
- Ideal for plywood shelving, partitions, and cabinet dividers
Set Router Depth Faster
The sliding offset scale is one of those details you appreciate once you use it. It lets you set router bit depth while compensating for the jig thickness, which cuts down on setup math and helps you get to the cut sooner.
- Offset scale slides out of the jig for router depth setting
- Compensates for jig thickness during setup
- Useful for repeatable cabinet and shelving joinery
What’s in the Box
- (1) Woodpeckers Exact Width Dado Jig, 32-1/2 inch model
- (1) Precision-machined 1/2 inch diameter Porter-Cable style template guide bushing
- (1) Matching spacer for the initial trim cut
Router and router bit are not included.
Key Specifications
| Product Type | Router Accessory |
|---|---|
| Capacity | 32-1/2 in |
| Minimum Dado Length | 5 in |
| Dado Width Range | 3/8 in to 1-1/2 in |
| Guide Bushing Size | 1/2 in diameter |
| Compatible Router Bit Size | 3/8 in |
| Weight | 13.0 lbs |
| Made In | Strongsville, Ohio, USA |
Compatibility
Template Guide Bushing Includes a 1/2 inch diameter Porter-Cable style template guide bushing. Alternate Router Setup If your router does not use Porter-Cable style bushings, Woodpeckers states that any 1/2 inch guide bushing with a 3/8 inch router bit will work.
Built For
Cabinetry Bookcases Built-Ins Casework Woodworking Shop Fixtures Shelf Joinery Blind Dado Routing
Pro Tip
Before your first project, make the trim pass with the included spacer using the same router, guide bushing, and bit combination you plan to keep on the jig. If you later switch bushing or bit sizes, plan on replacing the sacrificial edge guides so your cut line stays dead on.
Tool Nut’s Take
Tool Nut’s Take
Woodpeckers EWDJ-32-20 Exact Width Dado Jig – 32-1/2 Inch is a real fix for sloppy plywood joinery
This is the kind of router jig that makes sense the first time you stop burning half a sheet of plywood on setup cuts.
- Who it’s for: Woodworkers and cabinet builders who cut a lot of dadoes in sheet goods and want repeatable fit without measuring games.
- Why it stands out: It sizes the dado from the actual material, handles stopped cuts, and uses serious materials like phenolic and stainless instead of feeling like a temporary jig.
- Worth knowing: This is a dedicated setup tool, not a bargain accessory. It makes the most sense if dado joinery is a regular part of your work and you want accuracy to be routine.
Common Questions
- What kind of tool is this? It is a router accessory and dado jig used to cut accurately sized dadoes in plywood and other sheet goods.
- What dado sizes can it cut? Woodpeckers states it can rout dadoes as narrow as 3/8 inch and up to 1-1/2 inch wide.
- Can it cut blind or stopped dadoes? Yes. It has built-in stops at each end of the jig to limit router travel for blind joinery.
- Will it work if my router does not use Porter-Cable style bushings? According to Woodpeckers, yes. Any 1/2 inch guide bushing used with a 3/8 inch router bit will work.
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