Premium CNC & Router Bits for Precision Cutting

6 or 12 Side Birdsmouth Router Bit – Whiteside 3506

Also called a birdsmouth router bit, the 3506 allows you to join 6 or 12 sided projects. 1/2″ Shank 1-7/8″ Large Diameter Use for stock maximum 7/8″ Made In USA

6 or 12 Side Birdsmouth Router Bit – Whiteside 3506 - Main image
$43.19 $71.99 In stock

Category: Birdsmouth Router Bit

This Whiteside 3506 Birdsmouth Router Bit is designed to simplify joinery on multi-sided projects. It offers a practical solution for creating clean, accurate birdsmouth joints.

  • Available in a 6 or 12 side configuration to suit different project needs.
  • Ideal for joining multi-sided pieces such as columns, planters, or decorative frames.
  • Manufactured by Whiteside, a brand known for quality router bits.
  • Use with a router table or handheld router for versatile application.
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Elizabeth ★★★★★

The cut is so clean I barely had to sand the edges on my first six-sided planter. It took a while to dial in the depth, but once I did, every joint seated tight without gaps. Exactly what I needed for quick, accurate joinery.

Sebastian ★★★★★

Bought the 12-side version for a cedar planter project and the cuts came out clean enough that hardly any sanding was needed. Carbide stays sharp after a few dozen passes through hard maple. Setting the depth took a little trial and error on scrap first, but once dialed in it was repeatable.

Isabella N. ★★★★★

The 6-side cutter dropped right into my router table and cut clean birdsmouths on the first try, no chatter at all. The angle is dead accurate, so my staves close up tight with barely any gap to fill.