Radius Cutters
Radius cutters, also called roundover router bits, shape timber edges with smooth, consistent curves. Ideal for creating safe, comfortable finishes on furniture, frames, panels and worktops.
What Are Radius Router Bits Used For?
These cutters produce a rounded edge on straight or curved timber — used in everything from furniture to skirting:
- Edge Softening – Remove sharp edges on shelves, tops or panels.
- Roundover Profiles – Add comfort and a professional finish to stair rails, furniture and joinery.
- Worktop Edging – Create ergonomic curves that resist chipping and damage.
- Decorative Shaping – Used for cabinet doors, frames, mouldings and trim.
Used By:
- Cabinet makers and furniture builders
- Joiners profiling stair parts and handrails
- Fitters trimming MDF, ply or laminate boards
- DIYers finishing shelves, tops and edges
How to Choose the Right Radius Cutter
Think about cut depth, material, and job type before selecting your bit:
1. Radius Size
Smaller radii (3mm–6mm) suit trim or small furniture. Larger radii (10mm–18mm) give more curve for edges or rails.
2. Bearing vs No Bearing
Bearing-guided bits follow the timber edge — perfect for curves or irregular shapes. Non-bearing bits need a fence or jig.
3. Cutter Material
Tungsten carbide tipped (TCT) bits stay sharp on MDF, veneered ply and hard timber. Great for repeated use on site or in the shop.
Radius Cutter FAQs
What is a radius cutter used for?
It shapes the edge of timber into a smooth, rounded curve — ideal for creating safe, finished edges on furniture, handrails, worktops and trim.
What radius should I choose?
It depends on your project. 3mm–6mm for smaller furniture or detailing. 10mm–18mm for bolder, ergonomic curves on tops or rails.
Are these suitable for MDF?
Yes — TCT radius cutters handle MDF, chipboard and veneered ply extremely well. Always feed steadily to avoid burn marks.
Do I need a router table?
No — bearing-guided bits can be used freehand. A router table gives more control for small or narrow parts.
Can I sharpen a radius cutter?
Yes — TCT cutters can be resharpened by a professional. But many users replace them once dull for consistent results.
