Tongue and Groove Router Bit Sets: Straight, Wedge or Vee Panel
By Premium CNC & Router Bits for Precision Cutting | Published: 2026-10-31
Category: Buying Guides
Compare straight, wedge and Vee Panel tongue and groove router bit sets by joint style, material thickness and setup so you pick the right Whiteside set for your project.
Quick answer
Choose the Whiteside 3373 straight set for general board joining, cabinet doors and wood floors, the 3370 wedge set when you want a self-centering, decorative wedge joint in 5/8''–1-1/4'' stock, and the 3374 Vee Panel set when a small V-groove above the joint suits your panel design in 5/8''–1'' material.
What actually changes between the three sets
All three are two-piece matched sets with a 1/2'' shank, so the real difference is the tongue profile and the material range it is built for. The straight set cuts a rectangular tongue, the wedge set cuts a tapered tongue that pulls the joint tight, and the Vee Panel set adds a small V-groove above the joint line. That groove is a design choice, not a structural upgrade, so pick it only when you want the visible shadow line.
The straight set is the most flexible on thickness because its cut length and depth are fixed around a 1/4'' tongue kerf and 3/8'' cut depth. The wedge and Vee Panel sets publish material ranges instead, which tells you the manufacturer expects you to match the bit to stock thickness rather than adjust one bit across everything.
Where each joint style makes sense
Straight tongue and groove is the default for painted or hidden joints: cabinet backs, subfloor panels, shelving and glued-up boards where the joint will be sanded flush. The rectangular tongue gives predictable glue surface and is easy to dry-fit.
The wedge profile shines on visible joints in thicker stock because the taper wedges the boards together as you clamp, which can reduce the need for heavy clamping pressure. It is still a glue joint, so do not treat it as a substitute for proper clamping.
Vee Panel is a panel-look bit. The V-groove reads as a deliberate line on doors, wainscoting and cabinet fronts, and it hides minor misalignment at the joint. If you do not want that visible line, the straight set does the same structural job for less money.
The thickness limit is the decision you cannot skip
The Vee Panel set is recommended for 5/8''–1'' material, and any stock over 1'' requires a second cut on the tongue profile to remove excess stock. That extra pass is not difficult, but it changes your workflow and adds a setup step. If most of your work is 1-1/4'' or thicker, the wedge set's 5/8''–1-1/4'' range is the more natural fit.
The straight set's catalog does not publish a material thickness range, only cut length, diameter, depth and kerf. Treat that as a limitation: measure your stock against the 3/8'' cut depth and 1/4'' kerf before buying, and test on scrap if you are near the edge of what the profile can handle.
Setup, RPM and the cost of switching styles
Recommended RPM differs slightly: 14,000 for the straight set and 12,000–14,000 for the Vee Panel set. The wedge set's catalog does not list an RPM, so follow your router and bit manufacturer's general guidance rather than guessing a number. In practice, all three reward a slow, steady feed and a test cut on the same species you plan to use.
Because these are matched two-piece sets, you cannot mix a tongue from one style with a groove from another. Buy the style you will use most, and accept that switching joint look later means buying a second set rather than a single bit.
Decision rules for choosing your set
- If the joint will be hidden or sanded flush: Buy the Whiteside 3373 straight set. It handles general board joining, cabinet doors and wood floors with a predictable rectangular tongue and a 1/4'' kerf. Reserve this set for painted, glued or flush-sanded work where a visible groove would be wasted.
- If you want a visible, self-tightening joint in 5/8''–1-1/4'' stock: Buy the Whiteside 3370 wedge set. The tapered tongue wedges boards together as you clamp, and its material range covers thicker stock than the Vee Panel set. Check your stock thickness against the 1-1/4'' upper limit before committing.
- If you want a decorative V-groove line on panels or doors: Buy the Whiteside 3374 Vee Panel set, but only if your material is 5/8''–1''. For anything over 1'', plan a second cut on the tongue profile to remove excess stock. Budget the extra setup pass if you regularly work thicker than 1''.
- If you are unsure between styles: Cut a test joint in scrap of your actual stock thickness with the set you are considering. Matched sets cannot be mixed, so a wrong first choice means buying a second set later. Test before you commit to a full project run.
Product facts at a glance
- Straight Tongue & Groove Router Bit Set – Whiteside 3373: Straight two-piece set with 1/2'' shank, 1-1/4'' cut length, 3/8'' cut depth and 1/4'' tongue kerf, recommended at 14,000 RPM. It is the most versatile choice for standard board joining, cabinet doors and wood floors where the joint will be hidden or sanded flush.
Straight Tongue & Groove Router Bit Set – Whiteside 3373 - Wedge Tongue & Groove Router Bit Set – Whiteside 3370: Wedge-shaped tongue instead of a rectangular one, recommended for 5/8''–1-1/4'' material with a 1/2'' shank and 1-1/4'' cut length. The tapered tongue pulls the joint tight during clamping and covers thicker stock than the Vee Panel set without a second cut.
Wedge Tongue & Groove Router Bit Set – Whiteside 3370 - Vee Panel Tongue & Groove Router Bit Set – Whiteside 3374: Adds a small V-groove above the joint, recommended for 5/8''–1'' material, with 1/2'' shank and 12,000–14,000 RPM. It gives a decorative shadow line on panels and doors, but stock over 1'' needs a second cut on the tongue profile.
Who each set fits
Best for
- Woodworkers joining boards, building cabinet doors or laying wood floors who want a straightforward rectangular tongue
- Furniture makers using 5/8''–1-1/4'' stock who want a wedge joint that pulls tight under clamping
- Panel and door builders who want a decorative V-groove shadow line in 5/8''–1'' material
Not for
- Anyone working mostly stock thicker than 1'' who does not want a second tongue cut — choose the wedge set instead
- Woodworkers who need one bit to cover every thickness without matching stock to a published range
- Buyers who want to mix tongue and groove profiles from different sets — matched sets are not interchangeable
